Beschrijving
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)
Features
• 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: 200O
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, 150O source, unweighted): 10Hz to 30kHz
D.I. Section
Max D.I. Input Level: +18dBu
Input Impedance: 1.1MO
Pad: none
Gain: +10dB to +53dB
Equivalent Input Noise (noise floor): -94dB
THD+N (@ +4dBu output):
• .009% @ +10 dBu
• .115% @ +36 dBu
Bandwidth (1kHz, 600O unbalanced source, unweighted): 10Hz to 30kHz
Output Section
Max Output Level: +28dBu
Output Impedance: 600O
Power Supply
• +/- 15v (lunchbox supply)
Product Dimensions
• 1.5″ x 6.5″ x 5.25″
Product Weight
• .8 lbs
Shipping Dimensions
• 13″ x 13″ x 5″
Shipping Weight • 3 lbs
