Any differences in tonality should be correctable with the receiver's built-in EQ.
Audio Editor, Gramophone
No, buttons A & B (for amp switching) can not be on at the same time - they are mechanically designed so pressing one on disengages the other. It is the same for buttons 1 & 2 (for speaker switching) - so only one pair of speakers can be driven at one time.
Hi-fi: Sonneteer amp, cdp & phono amp, Systemdek IIx900, Rasp Pi + HiFiBerry DAC, ProAc Response D Two speakers; AV: Onkyo 876, Ruark speakers, REL Strata 5, Panasonic 50GT60
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Thank you one and all.
I'm off to play............
For future reference regarding the TC-7220 (as this thread is the top search result on Google when '2 amps 1 set of speakers' is entered...
Sorry, this is incorrect. I very recently emailed Stan Beresford to clarify this point, as I thought this to be the case (amplifier buttons interlocked for safety), and wanted clarification. I received this email back:
Hi Keith,it is possible to press both amplifier buttons together. If that could pose a problem in your environment then I suggest that you send the item back to me right away for a refund.
Debating whether to sent it back and instead just deal with 30seconds of banana plug swapping when I want to swap between AVR and HiFi amplification.
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