The Liberty Audio B2B-4 PHONO PREAMP is a high-quality, duo-mono phono preamp device that delivers lower noise and cleaner, better balanced dynamics—at double the speed of most preamps. It features a two-amplifier (input/output) topology for near-perfection in gain structure. It matches up brilliantly with the most sophisticated modern turntables, standing virtually alone as a phono preamp that combines factory-direct pricing with uncompromising excellence. The B2B-4 is all FET (Field Effect Transistor) with moving magnet/moving coil amplification.
The B2B-4 produces a doubly enriched sound that is pure, spatially vivid and compellingly life-like, rendering all of the warmth and nuance unique to the finest phonograph recordings. Your LP collection will come to life with the B2B-4 preamp in ways that will continually astonish.
B2B-4 TECHNICAL SPECIFICATIONS
INPUT STAGE
- Gain: MM 26 dB or MC 46 dB
- THD: @ 20dB Gain
- 3V/1kHz 0.001%,
- 3V/10kHz 0.0028%
- Max Output Voltage: 10V RMS
- Rise Time: @ 26dB Gain, 300nS
- Equivalent Short
- Circuit Input Noise: 100nV
- Current Consumption: 40mA
OUTPUT STAGE
- Gain: @ 1kHz, 30dB
- THD: 3V/1kHz 0.001%,
- 3V/10kHz 0.0015%
- Max Output Voltage: 12V RMS
- Rise Time: 300nS
- Current Consumption: 80mA
- RIAA Accuracy: 0.1%
- Total Current
- Consumption: 130mA (on-board regulators use 20mA)
- Dimensions: 17” W x 10.5” D x 3.25” H
- Net Weight: 11 lbs
- AC Input Voltage: 100V to 240V, depending on internal setting
- AC Consumption: 50W
Price:: $4,495
