Black Lion Audio B12A MkII single channel mic preamp

The B12A MkII is Black Lion Audio's tribute to the API 312A microphone preamp. Designed in a 1U half rack space package. The package comes with a small adapter plate so two preamps can be attached side-by-side and mounted in a standard 19" equipment rack.

Mic Section

Max Microphone Input Level: +1dBu
Input Impedance: 200Ω
Pad: 18dB
Gain (no pad): +26dB to +70dB
Equivalent Input Noise (noise floor): -120dBu
THD+N (@ +4dBu output):
.010% @ +22 dBu
.010% @ +36 dBu
.041% @ +56 dBu
.122% @ +66 dBu
Bandwidth (1kHz, 150Ω source, unweighted): 10Hz to 30kHz

D.I. Section

Max D.I. Input Level: +18dBu
Input Impedance: 1.1MΩ
Pad: none
Gain: +10dB to +53dB
Equivalent Input Noise (noise floor): -94dB
THD+N (@ +4dBu output):
.009% @ +10 dBu
.115% @ +36 dBu

Bandwidth (1kHz, 600Ω unbalanced source, unweighted): 10Hz to 30kHz

Output Section
Max Output Level: +28dBu

Output Impedance: 600Ω

Power Supply
+/- 15v (lunchbox® supply)

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