AMPS THIS BEAUTIFUL Don't Need 'Repair'…Only Love ❤️ - 1971 HIWATT CUSTOM 50 DR504

[@TheGuitologist]

Guitar used: www.zioguitars.com/shop/brad-linzy-the-guitologist-signature-meteorite Mics used: Guitar Cabinet - sE Electronics VR1 Passive Ribbon amzn.to/3KiVsCN EV 635a amzn.to/3YK8ZHR Drums were miced up with ONE Shure 565: amzn.to/3SdKfVP Audio Technica AT4040 used as a room mic amzn.to/3IhYV1x *SHOW YOUR SUPPORT* 1: Become a Member on Locals: theguitologist.locals.com/ 2: Donate via Paypal: paypal.me/guitologist?locale.... 3: Buy Merch: bit.ly/GuitologistMerch

[@simonfettig1945]

Hi Brad! Love the videos especially this one! Got a question regarding tubes. Where can I get my hands on a good matching set of 6 6550’s? The tubes available here in Medicine Hat are garbage

[@UncleDoug]

Viewing the innards of a HiWatt amp is like bumping into Margot Robbie at the mall......astounding beauty, flawless construction, impressive performance, and (most likely) way more than you can afford ;)

[@TheGuitologist]

And if they were for sale all the time, they'd put us out of business.

[@wrenchhead6840]

Good to see you again uncle doug

[@RHR-221b]

Stay free, Uncle Doug et al. All the best. Rab 🍻 😎

[@RHR-221b]

PS. To Rusty (Rest In Peace) and your beloved KittenKatz. 💖

[@roderickbalt8993]

Margot Robbie is just marketing, you can trip over more beautiful women in a mall actually ;)!

[@brianlebrun2382]

I have a friend who was recording in Electric Lady Studio back in the early to mid 70s with Clarence Clemens and a few other folks. In walked a man who asked if his boss could come in and lay some tracks down with them. They said sure but my friend being a major funk player at the time had no idea who Pete Townsend was. In he came with his assistant pushing in a Hiwatt halfstack. After the session (I've seen the pics and heard the tracks) Townsend packed up his guitar and left but didn't take the amp. My friend was able to track him down and in a phone call Pete told him to keep it because Hiwatt gives them to him. Well, he still has it and I've played through it. It's a friggin' beast and I had a chance to buy it but there's no way to pony up that much cash. The amp has been authenticated. Townsend used to spray a large spot of orange paint on the inside of the cabs and the head as his security "mark". They both have it and the serial numbers are correct. Great, historic amps.

[@pauldobberstein5643]

That is an informative comment on several points. I work as a Union stagehand and have encountered some artist-endorser arrangements and might unload from a few onward up to a pallet load of Mr. Headliner's latest signature model to be signed and sold or given away. Pete can com rock out at my place anytime, and I'd have to track him down also, if he left a Hiwatt behind. I'd gladly assume all responsibility for one, should he leave it behind. It would be no bother to tend to it for him.

[@musicalSFCat]

Very intriguing cool story. Speculate, your friend has the DR103 custom 100 amp. Purchased that model in the mid '80s. Hi-Watt Cab with FANE speakers. Beast of an amp. Clarence Clemens. What a sax player. R.I.P.

[@kimmassey6596]

Probably your best video ever. Thanks Brad

[@rmdatv]

Alright Brad. Been watching for yrs, but that one earned the subscription. Cant imagine how much work went into this but definitely appreciate it.

[@malcolmhardwick4258]

I remember when you could buy these amps as well as WEM, Selmer, Sound City and others for peanuts !

[@TheGuitologist]

We never see that stuff where I live hardly. I owned one Sound City a few years back. It's the only one I had ever seen in the wild, so I bought it.

[@malcolmhardwick4258]

@@TheGuitologist There used to be stacks of them in secondhand stores. Pick them up from 100 uk pound and up. You dont see them nowadays nor the secondhand stores they've all gone. But when you do see one pop up on ebay then they want top dollar. I had 50w Sound City for a while and a really great WEM 50w head that was covered in white leather. Someonestole it as well as other good stuff. Those were the days people didnt realise what they had !

[@scottdunn2178]

@@TheGuitologist If you remember the old Angela Instruments catalog, the dude would buy piles of these amps over in England and ship them back for resale in the States. A Selmer Treble 'n Bass for $150, etc. was common. 2203 heads for $400 all day long. Fun times.

[@pauldobberstein5643]

​@scottdunn2178 Yes, those were awesome times. Ìf only I had a time machine. A fairly large time machine. To bring back a truckload of Dave Reeves and Harry Joyce handiwork. Then I'd bring them back to present day, sell them all. Then go back to the 60's with a bankroll.

[@markn4526]

Another well-done video. I'm fortunate enough to have 1974 DR504 that I bought used back in 1980 for $240(!). It's a great amp that I used as my primary gigging amp thru the 80's. It was 100% reliable thru that period, but started developing some issues in the mid-90's. My amp tech called it "motorboating". I think it got upset probably because I wasn't using it enough. I had it re-capped and re-tubed and it was restored back to its previous greatness. I had an adjustable bias circuit installed too. It's a powerful and muscular sounding amp that stays very clean into very high volume levels on its own and serves well as a great pedal platform.

[@SirLoinMagroin]

Those amps are a thing of beauty. I was 15yrs old back then. I was playing all the amps from that era. HIWATT was known for how loud they were while remaining fairly clean vs a Vox or Marshall. Fenders back then were clean but not as loud or robust comparatively speaking. They have their own "crunch" voice when driven and are superb pedal platforms. HIWATT was truly a mil-spec amp and repair techs loved them back then as they still do today.

[@maxykuipers]

Obviously, nothiung has changed - has it?😜

[@lutboy2909]

That's a sexy amp there, like noting else i can see until now, just pure gold and sounded crazy too

[@dholzric1]

I had one just like this back in the mid 80s. It was a work of art.

[@hippoferd]

Hi nice amp and nice drum playing too , you said one day that you have a young daughter playing the drums; my 9 old daughter is playing the drums too since her 7 years old, I'm very proud of her, girls rock !!!

[@TheGuitologist]

The drumming daughter is the one in this video. She's been jamming with me here and there. I'll get her there! She loves music and has an excellent memory for it.

[@RealGengarTV]

FINALLY an amp repair video !

[@howabouthetruth2157]

I had already posted 2 comments mid-video, then had to run a quick errand & came back to finish watching. Man, that amp & guitar sounds amazing! Very impressive. Cool licks too! I used headphones, and even after the compression of youtube, I can really tell how ballsy that amp is. NICE!!!

[@jg-kd5hy]

"check out the big brain on Brad" Really like your explains and your tech skills. Great amps! Battle proven and stout!

[@mtacoustic1]

Had a 50 watt 'Bulldog' HIWATT combo back in the 90's. They were beautifully constructed to military specs. Wish I still had it!

[@andywitch666]

This amp is a jem of simplicity and tidiness, the heaven to the Mesa Hell!!! Nice to see you on the drums again, nice groove!!!

[@_Mr_C]

Agreed. Mesa is way too complicated the layouts are suspect. Multi-layer boards are crap. Amps should not be rocket science.

[@metricdeep8856]

This is why KZbin is the best thing to happen to this world. Much gratitude to you Sir. The universe owes you good Karma. Cheers and thanks for sharing. Edit: I left out the part about how fantastic you are at explaining what you are doing. Again, Much gratitude. Cheers.

[@firebugmusic]

That Custom 50 SMOKES! I have an original '73 Hiwatt Custom 100 I am also endorsed by Hiwatt. They did not give me the '73 :) I also have the matching 4/12 cab wall of sound! Thanks for posting our band is FireBug we are based in Joshua Tree CA

[@petersouthern7227]

Excellent! I have a 100 watt version from the same year.

[@TheGuitologist]

sweet!

[@jimaccord3341]

Great analysis, technical review, workmanship, and I love the band as well! Keep up the great work!

[@nealappleby8334]

Great amp, I’ve got a Dr504, Noddy Holder of Slade had a 200watt version!!

[@R3TR0R4V3]

That Hiwatt, wow the handwired workmanship is just outstanding. 😎 What a sweet amp! That wall of Supro's & Silvertones behind you at the end though.. I would've died and gone to heaven. 😍

[@TheGuitologist]

Who needs art on the walls? :D

[@sski]

I almost died when I saw the underside of the chassis. It was so gloriously beautiful. THE BRADS ROCK! 🤘🤘

[@BigislandEJ]

As an old electrician and a nerd , I do love this channel.

[@gibs8412]

thanks for playing the amp with the other tracks, love hearing old equipment that way!

[@artysanmobile]

I set my 1970 JMP 50w bias to net me 40w operation and it is still small stage capable but with a breakup I can use. I’m very happy with it. I bought this amp new and will never let it go.

[@klauth_Yksyn]

This was great! I just bought a couple of the new Hiwatt offerings and am enjoying being part of the legacy.

[@stiffrichard2816]

I never get tired of watching Pete Townsend topple that full stack BAM!-Right down on the hard stage floor... and it still worked!!!

[@vayabroder729]

The Kids Are Alright clip? 😉

[@stiffrichard2816]

​@@vayabroder729Yup!

[@tommy.n94]

Wow, this amp is a piece of an art! By the way, your music at the end is genius!

[@TheGuitologist]

Haha.

[@frufru0071]

This is my first time seeing one of your videos, and I’m really happy to have found it! Considering how clean your sound is, that amp was singing buttery-smooth. What are those, PA-58s? I don’t recognize the guitar you’re using, but it would be cool to hear some of those riffs you playing arranged into a song and really taking that amplifier to its fullest…whilst you let the volume knob on your guitar and all 10 of your fingers elicit Jeff Beck like sounds from that amplifier. It’s a totally different setup, (what am I saying?!). Sorry. Awesome video and beautiful work with your soldering iron. That "work" looks so good it’s more like art on a circuit board. Great video and well executed. Thank you. I’m subscribed.

[@bdhay02]

Beautiful. That was my first guitar amp (my Dad bought it for me used around 1976-1977). It had a couple of cigarette burns on the Tolex and had a slight smell of smoke and beer once the tubes warmed up. I figured it was probably made in the late 60s to early 70s then spent some time on the road. I sold it in the late 80s for $200 when getting out of debt. If I had a Time Machine I would go back to tell my younger self to give my head a shake. 😂 No idea what a late 60s to early 70s Hiwatt Custom 50 is worth today.

[@truthtorpedo99]

Nice arrangements at the end, sweet variety of tones too

[@SteveHacker]

Now THAT REALLY DOES sound like the 60s and 70s! Now I MUST have one (just as soon as I win the lottery). MMMAN! More videos like this!!! 😍😍😍

[@Factory_Muff]

Morning Brad! You and Uncle Doug are long time heroes of mine. This is the 4th account I’ve been following you guys from over the last 8 years. I asked Uncle Doug if he would recap and change the power cable to a 3 prong to my 1962 Gibson Les Paul GA- 40T Crestline Amp. I figured I’d ask him first and then ask you. He said he’s got too much work ahead and to ask you instead. Either way, I’m not in a hurry and it would make a great video. The amp is a minty closet queen with paperwork and schematic . It was sold for 289 dollars in 1963. I bought it in 2010 for my 30th birthday and the only thing I did to it was retube it and change some fuses that kept blowing . It gets super hot if I play it for more than 10 minutes and still blows fuses. And the tremolo never worked. It’s a beautiful amp that I would be honored to have you revive it and it would make an awesome video, especially since I know you love old Gibson amps. Also, Im not in a hurry at all, so I don’t care how long it takes. Please take on this project for me bro! -Matt

[@davidstorm4015]

Great to see an amp repair video again, m ore of these please! This one was an absolute beauty, a pleasure to see you work on such a fantastic amp. Fantastic so see the imaginative demo section at the end too, that must have taken a lot of time and effort.

[@orionwarren4244]

Ahhh, yes. That organic 60s and 70s crunch tone these old English amps produced so effortlessly.

[@TheGuitologist]

It was BEYOND loud in the room to get that crunch. Hearing protection recommended!

[@kennethoneill241]

The coolest jam on your channel yet! Thanks

[@petersikstrom9232]

Oh boy! My favorite amp! At the time, mid 70s, I was working as an amp/guitar tech in Gothenburg, Sweden, called MUG, Music Unlimited, in english. We got the opportunity to sell HiWatt for the Swedish and Skandinavian market. But....There was a big hurdle to get over, SEMKO! Similar but much more rigorous than FCC...... I got the task to go and see if Dave on how we could alter the amps to fit the skandivian market. 1 IEC power socket 2 two slowblow 6.3 amp fuses for the heaters. 3 up the grid resistors to 5 watt, stupid since the valves was idling at 50% 4 Speaker outlet, female Anyway, I met Dave at his office in 197x, two long narrow stairs up. I presented what we needed to change for the market and he just flat out said NO. I am ok if You do the market adoption, because the units are safe when they leave here. End of story. I have done thousends of SEMKO conversion during the 70s and 80s for the Skandinavian market and yet do not have one! It is built like a Tank.

[@TheGuitologist]

Awesome story! Thanks for sharing that. The IEC plug is just an improvement no matter how you slice it. Pretty sure the wire wound screen grid resistors are 5W in this example anyway. I think heater fuses are probably overkill since any short in the filament circuit would blow the Mains fuse anyway. Very interesting.

[@B_Vuv]

Great video Brad. I've been waiting a while for more tasty amp stuff from you.

[@TheGuitologist]

Hope it was worth the wait.

[@julianmetcalfe1070]

Wow sounds of those classic Amps are heaven, great jam at the end too wicked

[@peterstephen1562]

The creative sound demonstration / performance is stunning. Well done. Nice to see you happy.

[@TheGuitologist]

Thank you very much!

[@popeye089]

Ooooo I had a 1971 100. IMO a HiFI Marshall with boutique build quality before “boutique” existed

[@paulhendershott667]

You got the electronics nerd in me excited again! I used to build everything HEATHKIT back in the day! I also restored antique radios from the 1920's - 1940's and my share of vintage ham radio gear. I swapped a bunch of Heathkit and historic Ham Radio gear with Joe Walsh back in 2000, he's also a licensed ham, WB6ACU. 73's Paul W9BBR

[@TheGuitologist]

There's still deals on old tube gear here and there if you know where to look.

[@jeffjeff4477]

I'm at Hiwatt fan since 79 My buddy had a HW 100, also brothers HW 50 that was never used, so I used it for bass. It took me awhile to realize how fortunate I was to have used one so early in my musical adventure. I've been through a few amps since then, Traynor , Acoustic, Roland, and now I have a 86 Bass 100, it's been gone through and functions great. Probably a holy Grail amp to me, I know it's not a early 70s DR but, honestly, it's the next best thing to me. I really appreciate the sparkling sound and unsurpassed bottom end. Thanks for sharing this video. Next HW may be a 70s dr50 They seem fairly reasonable cost wise, unlike the DR 100 watt Love the sound and design and they are built like a tank!!!! Edit Loved the end jam Sounds great!

[@208414]

I loved the full band jams at the end.

[@TheGuitologist]

Thanks. I’ll probably do at least a little of that from now on.

[@HOLOCULT]

Wow!!! Awesome rig, awesome tone! Great playing on the skins and strings man!

[@robertbarbaree4190]

Great video, I enjoy your walk throughs and the jams at the end were a bonus!!

[@bugsbunny3488]

HUMMM: Is this Brad Zappa or Brad Linsey.Verry cool Brad HIWATT amps are great,real works of art. JUST LIKE YOU!!! Great video. Looking forward to more repairs.

[@PetraKann]

Great video - dragged up some old memories of HIWATT 100 amp head I bought in the early 1980s. It didnt work but luckily the issue was vacuum tube related only so easy to fix. I ran it through a cheap speaker cabinet which looked like a Marshall but wasnt. I didnt know anything about HIWATT amps at the time and sold it for $130 which was more than double the price I bought it for. I thought I did well out of the deal - silly me. I then saw Pink Floyd’s live film called “Live at Pompei” and HIWATT amps were used and shown in some of the songs. UK company which was recently bought by a Canadian business man and restarted. I had a lot of gear in the 1980s which was second hand from the 1960s and 1970s. Easy to buy at the time. Kicking myself today. (Had a Rhodes piano with 4 keys that didnt work and also a nice Hammond organ with rotary speakers. Sold them for some reason- probably to buy a Roland D-50 and various drum machines and multitrack recorders. Cant have everything😢)

[@PaulaXism]

Isn't it annoying when we think back at all the 60's amps we went through in the early/mid 80's and how much cash we would be sitting on today.. I remember selling a 1970 Marshall bass 100 for £100 to somebody in about '85. the only one I have left is a very nice Laney Session 50 topmount built 6/67... and a couple of late 60's WEM things which have that typical sound...

[@TheGuitologist]

There’s a lot of stuff I wish I had back too. Can’t keep it all.

[@garymallard4699]

Uncle Doug and Cousin Brad...2 Wild & Crazy Guys !! 👍🤨

[@marshallgibson8872]

Sounds radd. I have a pretty rare 1973 DR103S. It's two input with a foot switchable gain cut/ boost. Few years back I put in my best Telefunken 12ax7s and a quad of 1968 tesla 6ca7s and man did make a huge difference over the electroharmonix that were in it.

[@TheGuitologist]

An amp that nice deserves good tubes. Putting JJs in an amp like this is like putting Wal-Mart tires on a Ferrari.

[@marshallgibson8872]

@@TheGuitologist agreed. Despite what people say proper tubes go along way. Back then they could scrutinize quality of tubes because it was as common as lightbulbs, some stuff they let slide today because it's such a labourous process to make so they still put em out even if they are not that good.

[@calcariachimera]

Rocking drumming skills my man!

[@rockdaddy2168]

I miss my HIWATT. Early 70s 100w. Bought it new.

[@ChristofferKeizer]

Digging the drumming. Very interesting video, way above my head.

[@strat0871]

Congrats master.

[@peterburi2727]

I had one of those in my youth, great sounding amp. Nice choice for a video.

[@pittbrat7963]

i accidentally pushed the thumbs up button twice. Not only the guts look good, these amps sound absolutely killer!

[@fiddlix]

50-60% plate idle dissipation is plenty for a Hiwatt 50. I love the David Reeves era of Hiwatt amps. Great job Brad.

[@RogerBarraud]

That sounds excessive to me. Why not crank it all the way up and enjoy Class A goodness? 😕

[@snowyrain5730]

50% ?! You're doing yourself a massive disservice running these amps that cold.

[@giulioluzzardi7632]

70% and it should sound massive.

[@bloodmoney88]

I have a hiwatt quad box, with a black-heart hothead, the amp is fn loud... nice drumming Brad. I do similar, play it all... fun. Love your show.

[@MrMe4444444]

Loved your demo at end. Better than noodling.

[@StevenCarinci]

Did he mention that the intermodulation distortion is reduced by the tube regulated control grids unlike the bassman Marshall circuitry? More hi Fidelity relying on true master volume preamp overdrive. Great amps.

[@treed873]

Thanks for the repair vid! Always fascinating.

[@TheGuitologist]

You bet

[@robertclarkguitar]

Killer snare. You tuned it up nice. I miss my kits. My god. Great video my friend. Learned a bit about biasing.

[@faultlessguitarsandamps1116]

I really liked your playing . Very cool music . And the Hiwatt sounded great .

[@Twobarpsi]

Wow!! The layout of this anp is top notch!!

[@RHR-221b]

Thank you once again, Brad. I am just about ready to get my 'metaphysical' teeth et al. into this most welcome upload/contribution: given free, gratis and for nothing! All of it to yours, and you. Stay free. Rab 🕊 PS. Never forgetting the delineation of linear and logarithmic pots! 🍻😎

[@TheGuitologist]

Good to see you, Rab! Thanks for stopping by, as always!

[@RHR-221b]

@@TheGuitologist Thank you, Dear Brad and your darling Weans. Almost out of the woods, re my Darling Mary's recent bad fall (damaged pelvis and lower spine) and subsequent Zimmer-frame routine, until her badly-degraded hip joints are renewed (linear or logarithmic?). With our Love. Mary and Rab. 💖

[@embreesmith7613]

Brad... I always was impressed with the Military Standard workmanship on these. 🙂

[@simonnotthepieman1581]

I bought a Hiwatt just a few months ago. It says Custom Hiwatt 20 on the front though model is SA20. It's frigging lovely! Loud! Tons of headroom, and takes pedals well. I run it thru a BOSS TAE coz of neighbours lol

[@simonegleton1790]

That was excellent, very informative as usual, plus tone to die for at the end, thank you!

[@groovedodger]

Wow what a beauty in such good nick. I have a Dr 103 100w 1970's so this vid very useful thanks Brad.

[@hansemannluchter643]

That was a great watch, thanks. Always a pleasure to see the inside of a Hiwartt😁

[@BlizzardofChizz]

Here’s my guess as to what happened. It’s well known that Via owns all of his publishing thanks in part to the advice Zappa gave him. The Ozzy camp on the other hand has quite the reputation when it comes to their dealings with song writers. Bob Daisley, Lee Kerslake, and Jake E Lee just to name a few. It’s quite conceivable that Ozzy and Via had a great time recording but when it came down to business Via wouldn’t sign over his publishing. The record got shelved and that was the end of it.

[@martinmccann2112]

Cracking video of my dream amp,many thanks Brad.

[@MEMORYECHO1]

Back in the mid ‘90s I bought a couple of 1970/71 Dr-103’s around $500 from Black Market Music in Los Angeles. I traded my Marshall JCM900 once I heard the Hiwatt. I still have them to this day! I would lose sleep if I had an issue with one of them. I met some old timers that knew out to service them - the genius of Greg Leon! Later on I met Don Butler who worked on converting my Super Lead to 6550s. Hiwatt is by far my favorite amp!

[@terrymingle552]

Great video & the sound clips at the end are KILLER!

[@TheGuitologist]

Thanks Terry. I appreciate you taking time to watch.

[@cheaneysaddles]

You may be the most entertaining individual on KZbin!

[@Damaraja]

What a treat. Hits the spot. Thanks, B. 🤙

[@jwjeffrey]

Nice shuffle at the beginning of the jam!

[@simonkormendy849]

Hey Brad, how's things buddy? hope you and your family are all doing well, geez, you get to work on some really cool pieces of gear, I'm currently doing some maintenance work on my mid 70's (I think) non-reverb Fender Super Twin amp, I got it back from a friend of mine and it was making some loud crackly noises, turned-out to be some old carbon-comp resistors in the V1 circuitry that needed replacing, one of them, a 47k/1W 10% carbon-comp resistor had drifted out of tolerance, it actually measured 53k, I ended up replacing five carbon-comp resistors in total with five new 1W/5% carbon film resistors of the appropriate values, that fixed the loud crackly noise, the amp still has some slight background crackly noise, but it sounds a lot cleaner now, I'm also going to replace some caps associated with V1 too, two 330pF/1kV and the usual .1uF and .047uF tonestack caps, I managed to order two new 300pF/500V silver mica caps as replacements for the two 330pF/1kV ceramic caps from Evatco (ever heard of them?), there's only about 190V on the plate of the first gain-stage of V1 so a 500V cap should be fine.

[@vinn.5215]

Brad, at 17:45 -- what is the purpose of these 4 large gold colored resistors you have the tester lead on? Can you please explain what that is? Thanks!

[@TheGuitologist]

That is what's called a dummy load. kzbin.info/www/bejne/rHXKfJWoe9yKgqc

[@KekmanForTheRestOfTheWorld]

the first 9 minutes of this video are like some weird kind of guitar meditation content. i love it! especially the 2 minutes ater 07:00

[@blkjckgtr3075]

Awesome teching and playing ,that guitar sounds very straty,Cheers!

[@johnjames1813]

Killer amp. Great video. Thanks

[@johnkohlhauff9061]

Awesome video Brad. You definitely made that amp sing. Your tweaks were spot on. The amp sounds great and your guitar playing I really enjoyed. Thank you Brad. Look forward to your next video!!

[@TheGuitologist]

Glad you liked it! Thanks John

[@edwhite7475]

I had one that was even cleaner, exactly the same amp...a 71, It was halfway between a Marshall 2204 and a Fender Twin, sound wise. I think it was louder than my Marshalls w 6550 power tubes. I traded it for a perfect plaintop sunburst Gibson Standard, an '88. My first 'burst- I had two 2204s, so I figured i wouldnt miss it. I paid $225 for it in a pawnshop...on PAYMENTS, LOL. Clean as a whistle, inside and out. Now that ive worked on a few 2204s, i wish id kept it. But i enjoyed it for about ten years, never any problems. And the Les Paul was fantastic.

[@howabouthetruth2157]

I forgot to post in my original comment, that truly is one very well-made & tidy amp. For most novices like me, the wiring of many amps looks like someone dumped a wad of spaghetti in there & patted it down "level", lol.

[@ralfhedstrom]

Thats a work of beauty....I am drooling.

[@MrWalleye]

Oh man that amp sounds so good. Great vid Brad 👍

[@misterknightowlandco]

The attention to detail is amazing. When you showed all the pots and all the labels were facing the same way… now that’s ocd level attention to detail.

[@jeremybender401]

Great playing and a great sounding amp! Where's mine? I would bet the farm that you are a big Tony Iommi fan.

[@TheGuitologist]

You kidding? Tony’s the man.

[@smeh3929]

Дуже дякую за відео, по технічній розробці один з найкращих гітарних підсилювачів👍🙂 Дивлячись на шассі, компоненти і туретборд очі радіють якості 👍🤗🙂

[@JaniceLalla]

I enjoyed the replay and your playing

[@TheGuitologist]

Thanks Janice

[@gregivey183]

Definitely hear Page blues tone..wow! Well done, Brad

[@KevinKing-j9t]

What a brilliant performance

[@vainwretch]

Man ! Great tone out of that amp ! Way to jam ! : )

[@zandig666]

Great tunes Brad's!!!!!

[@rogerbranton1752]

Haven't seen an amp biased like that before - interesting! It sounded sweet too!!

[@TheGuitologist]

If you bias to get rid of crossover distortion in this way, you bias the tubes as cold as they can get without this distortion. This means quicker breakup at lower volumes, if that's what you want, and the tubes run cooler.

[@hlyangel1]

Great sound on the jam! Thanks for doing that.

[@sylvainbebert3704]

Super tone ! Love the 50w Hiwatt

[@Nizodizo]

I am digging your Hiwatt amp.

[@DetroitWrecker666]

Wow! This is incredible!

[@TheGuitologist]

IKR!