Burl Microphone Pre-amp modules for API 500 Series.  B1D uses BX4 steel output transformer. 

Based on the API 500 Series form factor, the Burl Audio B1D was designed to compliment the B2 Bomber ADC, and give you multi-channel pleasure. With the proprietary BX3 input transformer and BX4 iron output transformer, the B1D Mic Pre delivers warmth with depth and clarity. An all discrete transistor, Class A, direct coupled, capacitor free circuit path, gives the B1amazing punch on drums, beautiful tonality on guitars, and warmth with presence on vocals.

The B1D is the same as the B1 except that it has an all iron BX4 output transformer giving it a more terrifying rock tone. An all discrete transistor, class-A, direct coupled, capacitor free circuit path, gives the B1 amazing punch on drums, beautiful tonality on guitars, and warmth with presence on vocals.

The B1D comes complete with both Gain and Level controls. If you want that heavy, gainy tone, crank up the stepped gain control and offset that with the level control. If clean tone is your thing, turn the gain down and crank up the level. For ribbon mics and other low impedance sources, the B1 has a transformer coupled impedance select. The B1 gets the best out of any microphone, whether it be dynamic, condenser or ribbon.

Use the B1D’s 1/4” instrument/line input on the front panel, plug in, crank up the gain and go. The PAD switch allows for hot signals and balanced line inputs through the mic XLR on the back panel. Run your tracks or mixes through the B1 for warmth and glue. The B1 was designed to rock. Run multiple B1 channels for your rhythm tracks and you are there.  Replace EQ and compression with true analog PHAT.  Run your primary tracks through the B1 mic pre, follow with a B2 Bomber ADC and that's about all you will need.

FEATURES:

• BURL custom BX3 input transformer
• BURL custom BX4 iron output transformer
• Audiophile, discrete, Class A, direct-coupled, capacitor free circuit path
• Stepped gain control
• Independent output level control
• 70 dB gain
• Impedance select
• 1/4” front panel DI input
• 30 dB pad for hot signals and balanced line level input
• Phantom power
• Phase reverse
• Tri-colored gain level indication
• Love and thunder