0:42 lots of weird, vintage mics use a 1/4 unbalanced mic input, but frankly, i feel like a higher impedance would still be better given the mics also are probably pretty high impedance, presumably, without an in-line transformer

I’d be very interested to know how the optical element in the ola5 compares to a wa-1b. It seems to exhibit similar behavior with the obvious lack of tubes.

WTF this channel only pops in my timeline now ?!?

First rate! Really enjoyed!!!

What an incredible video for a deep dive on the circuitry of the 1073. Do you happen to sell these premade?

The thing is... alot of those discrete component designs don't necessarily work better than modern gear with integrated circuits and external power supplies. Right now, some of the better preamps or interfaces, in terms of signal-to-noise ratio, actually use really cheap wall warts, in fact.

This video made me respect and love a 1073 even more than I already do ! We’re can I buy this 500 series ?

what you didnt take into account is that the ratio is in the FEEDBACK and doesnt follow exactly as the voltages you describe. so the ratio switches dont EXACXTLY follow ratio switching like a dbx compressor would, but it isnt quite as simple or as non-ratio as you describe.

I would love to see a tear down of something super contemporary

Conclusion about distortions created by transformers connected in amplifiers anode circuitry is not true.

This is just wonderful! Any chance we get a 1084?

Follow up: how to include a diy transformer in your mastering chain

Calrec J series sound better and less muddy.

I've been dealing with Charlie recently and he is a great, generous and cool gentleman. I agree after creating a 500 series module I switched out the Cinemag for a Ludahl and my God it's so rich. No wonder Neve packed his later consoles with them. They just sound like real music.

Really nice video

Manley Vari-Mu... I love the look of it.

Thank God!! I about had a heart-attack when my G-Bus didn't light up. Like above (at 00:48) I had a couple of my IC2, IC3 NE5532 opamps (x4) backwards. Everything lights up now! Keeping fingers crossed... still have calibration to do. 🤞

you are wrong, Carnhill never made Lo 1166..never, Carnhil only made input transformer and their output transformer does not sound same as lo1166r,

Dude, I adore these types of videos. I wish y'all would make more of them. A little 2 minutes "compressor workout" section tacked on at the end (so we can hear the unit on some drums or a mix) would be the icing on the cake. In fact I would pay for such content. Thanks for all you do!!

Amazing video, do the 1073 too please!

Refreshing to hear the TRUTH and not some silly forum warriors

Check out the mcintosch unity coupler output transformer.

I bought this very unit from Goodwin way way back in 2012 when he was first starting out. It is an amazing DI (to all the naysayers out there ranting on about Radial)... its not a Radial clone, it is a passive Ferrite DI with a Cinemag transformer in it. The best you can get frankly, as by the way are his videos and his kits, as attested by the fact that 12 years later, he has established himself as one of the leading voices on the DIY audio scene and built a successful company. Well done Goodwyn and thanks for the video.

Great video. Please zoom in on the schematic. Impossible to see details on phone. 😔

I love this so much! Can't wait to have some time and money to get into 500 and make one of these!

irritating new orlean jazz !

Any good ?? I have just a inbuld viritual digital gimmick sidechain on my plastik sonicware liven bass and beats 😂👆🏻

My first compressor as a studio intern a million years ago. Love this thing! Thanks for the teardown.

I find running a stereo summed signal into two mono preamps causes phase issues. I usually separate the mix into dual mono signals before running them into the preamps. Then sum them back together.

doubling of voltage is 3dB increase, not six, for eletronic audio?

Do you have official European retailer? :)

what is the difference from the mki in terms of sound?

Ideal voltages???

what is the software you are using for measuring THD?

Great video, thank you so much !!! I am suspecting that the 12% THD is coming from the FET gain reduction cell at the input, and not from the first 3 transistor gain block. Is it possible for you to measure THD at the FET gain reduction cell? And what rms signal level is at the FET gain reduction cell when you measured 12% THD at the output of the first 3 transistor gain block? I would appreciate your information. Thanks again !

Signals aren't balanced all the way through BECAUSE YOU'D HAVE TO DOUBLE THE COMPONENTS AAARGH. Yes. Loud forehead slap. I learn so much from these. You rule.

In true high end gear there are two independent signal paths for balanced which means it stays separate from the power supply all the way to the output. Cheap stuff doesn’t do that and it basically defeats the purpose of having a balanced signal chain. A good example of a true balanced topology is the KTE Holo May DAC. You should do a tear down video on that as it will blow your mind. It has two separate resistor ladder DAC stages for the balanced signal and keeps them separate all the way from the power supply to the output, and it does it again with a separate DSD DAC.

Tysm for the vid, the affordable and friendly DIY product and for just....being rad? Yep. Cheers!

Class A Single Ended, not push pull output

The teardowns are very appreciated! 👍

I really want to thank you for everything you do. I enjoy all of your content, it feels so right to spend some time listening to you sharing knowledges in a such humble and efficient way. I think one of the reasons you are a great teacher and a great gear manufacturer is the fact that you seem to deeply understand the reasons why any student could be intimidated from learning. Just watched the whole series about measuring audio equipment with REW, you can not know how valuable this is to me. Cheers!

Hi Peterson. The web page for the 73 isn’t showing the comments. I’d really like to know what others are saying. Thx

thanks :-) i agree, how Rew can be this cheap ?

Great video! Your explanation is in depth but still clear and simple. And the beautifully illustrated video really helps to quickly understand relatively technical information. Thank you for the effort you put into this! 💚

came here hoping to see a HiFi preamp.... 🥲🥲

0:03 0:13 0:25 0:35

Correct me if I'm wrong but when you demo the actual assembly I believe you have just put the pot inbetween pin 2 & 3, kind off shorting it via the resistor. This is not really a parallel connection to the pre. I would have thought that a better mod would be on the preamp side not the mic side, otherwise mic manufacturers would add switches in their mics to change impedances as a gimmick. Also, the 10:1 ratio is actually not that bad, it might be overkill for some mics but my experience is that transients "seem" more responsive with a higher ratio. I'm actually wondering whether you couldn't increase the output impedance with the a dual pot in series with the pre.. rather than parallel.. hmm.. I think this idea seemed great but you haven't convinced me that you've fleshed it out and also actually tested it properly using spectrum analysis. Cool idea tho!

Thx for sharing. I'm sure of a nice design. However, does it sound exactly neve 1073?. I've heard warm audio 73 with charnhill transformers, vs. Neve 73LB 500 series. Neve sounded better. It would be nice to hear the difference . Thx.

DiyRe Neve "clones" have either class A/B, or class B circuit if power supply sags under dynamic conditions. Another strange thing is calling 1290 preamp 1073 preamp/eq.

thank you for this information my friend!