Summit Audio 2BA-221
Mic/Line Preamp Module

2BA-221

Introducing the 2BA-221 continuously variable impedance microphone preamp from Summit Audio. Featuring microphone level, line level, and Hi-Z instrument inputs, the 2BA-221 utilizes separate and individually controlled solid state input controls to mix the microphone input with the Hi-Z or line input into the variable vacuum tube output. Mix them together through the 12AX7A/ECC83 vacuum tube output or separately through individual solid state outputs. The 2BA-221 also features a stackable input design; multiple 2BA-221's can be linked together to form a modular mixing device with individual outs, inserts per channel, and a final vacuum tube gain stage. Its swept high pass filter, multiple simultaneous tube and solid state outputs, insert jack, and internal power supply makes the 2BA-221 a powerful tracking and mixing tool.

Features:

• Variable Mic input impedance from 100 ohms to 10K ohms
• Variable Highpass Filter
• Hi-Z Instrument, Line, and Mic Level Input
• Hi-Z input and Mic input available simultaneously with separate gain controls
• Separate solid state and tube outputs
• Insert Jack
• Stackable with more 2BA-221's
• ½ Rack Size
• 3 Year Warranty
• XLR and ¼" outputs and inputs
• Three variable, independent gain stages

Specifications:

Power Configuration

• Internal AC Supply
• 20 watts, 115, 50 or 60 Hz (USA model)
• Fuse size .5 amp, slo-blo for 100/115 V
• Fuse size .25 amp, slo-blo at 230 V

Input Impedendance

• Mic: 1.5K ohms
• Hi-Z: 10K-1.75M ohms
• Output impedance (XLR): 150 ohms

Connections

• Mic Input: +4 dB female XLR
• Line Input: -10 dB 1/4" balanced
• Outputs: +4 dB male XLR and 1/4" -10 dB balanced
• Stacking Input/Output: -10 dB balanced
• Max input level
• Mic: -16dBu
• Line: 22dBu
• Hi-Z: 15dBu

Operating Measurements

• Max output level (XLR): 25dBu
• Max gain: 75dB
• Equivalent input noise: -135dB average 10Hz-20kHz
• Frequency response: 10Hz- 50kHz (-1dB)
• Signal to noise ratio: 115dB average 10Hz- 20kHz
• THD + Noise: 0.055%, -32dB in +4dB out, 1 kHz
• Vacuum tubes: 12AX7A

Warranty: 3 year limited warranty

• Height:
  1.75 inches (4.44 cm)
• Width:
  8.5 inches (21.59 cm)
• Depth:
  7.42 inches (21.59 cm)
• Weight:
  7 pounds (3.15 kg)

Our Part #  2BA-221