The B12A MKII 500 packs the same punch as its 1⁄2 rack cousin, but in the convenient and flexible 500 series format. The API®-style design features a delicious Cinemag input transformer, serves up huge portions of low-noise gain, and has the same classic American rock sound that the original API® 312A is known for! Get ready to fill your lunchbox®, ‘cause once you go Black Lion Audio, you never go back!
- GAIN: clockwise rotation yields an increase in output signal amplitude, counterclockwise rotation yields a decrease in output signal amplitude
- 48V: engage to turn phantom power on, disengage to turn phantom power off
- PHASE (Ø): engage to adjust input signal polarity by 180°, disengage to leave input signal polarity unchanged
- PAD: engage to reduce input signal amplitude by 18dBu, disengage to leave input signal amplitude unchanged
- Hi-Z: engage to use front panel Hi-Z IN as preamp source, disengage to use 500 series rack’s XLR input as preamp source
- Hi-Z IN: input jack for use with high impedance, unbalanced sources (GAIN knob adjusts signal amplitude)
- 500 Series format (lunchbox® required)
- Cinemag Input Transformer
- Edcor Output Transformer
- 70dB Gain
- Hi-Z Input (passive, unbalanced)
- Phantom Power
- 18dB Pad
- Phase Switch
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)
Product Dimensions
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Shipping Dimensions
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