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Review, Teardown and Audio Test of Aiyima A70 amplifier with Aiyima DAC A1
Its highest quality class d amplifier made with PFFB (Post Filter Feed Back) topology thus providing very clean and controlled audio performance. @aiyimaaudio8133
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parameter:
Chipset: TPA3255+NE5532
Replaceable operational amplifier chips: RT3609SM, OPA2604, OPA2134, LM4562, JRC5532, OP275GSZ, OPA1612, MUSES01/02/03, etc.
Distortion:0.0015%(@1W)
Signal-to-noise ratio:≥≥116 dB
Frequency response: 20Hz-20KHz (±1DB)
XLR input sensitivity: 3.8Vrms (19dB)
RCA input sensitivity: 1.9Vrms (25 DB)/1.1Vrms (28.5 DB)
Speaker impedance: 4-8Ω
Stereo maximum output power: 2x300 W (@4Ω) 48V10A
Input mode: RCA+XLR
Trigger: 12v Tigger input
Sub Out: 20Hz~150Hz/600Hz(-3dB) (adjustable output cutoff frequency)
Supported equipment: decoders, preamplifiers, computers, CDs, mobile phones, MP3, etc.
Output mode: 2.0 passive speaker+ Active Sub
Working power supply (DC): 36-48V