Summit 2BA-221 Mic and Line Preamplifier

Technical Specifications

Size and Weight

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)

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.