Shortlist of Pre-amps for Bartok into Active ATC System Please

[Ermos (Erno)]

@SeanSullivan

I think I am aware that it is not a fully balanced unit in that it runs XLRs but the balanced aspect is broken internally by the circuit design?

Sean, you might like to read the following on the Allegri’s balanced handling and design:

What makes 6v better than 2v

After some studying, this is what I found: For the Allegri Reference passive, autotransformer volume control preamp: Input: pseudo-balanced input, with on pin 2 of the XLR signal, and on pin 3 ground. [Pin 1 (ground) on the balanced XLR out from the dCS source is not connected, so ignored] Maximum signal level: 4V RMS 8Hz; 10V RMS 20Hz and up. At -10dB (normal listening) input impedance is 200kohm, for a power amplifier load with 20kohm input impedance. Usual balanced pin assignment: Pin 1 gr…