Accustic Arts : PREAMP I - MK 3
Fully balanced Preamplifier

Accustic Arts Preamp 1 Mk3 is a fully balanced design, with extremely low distortion Class A output stage using technology derived from studio engineering. With premium quality ICs (selected Burr Brown OPA 627 and OPA 2107 only), magnetically shielded and encapsulated 75 VA toroidal core transformer of premium quality for high output reserves and several other careful design features, it offers studio level preamplification.

Features

• Circuit topology optimized for very short signal paths
• Extremely low distortion spectrum; e.g. K2=0.00007 %
• 3 x fully balanced inputs (XLR)/2 x unbalanced input (RCA)
• 1 x unbalanced input (RCA) configured as ?SURROUND BYPASS
• 2 x fully balanced outputs (XLR) e.g. for ?Bi-Amping? configurations
• 1 x unbalanced output (RCA) e.g for a separate subwoofer (active)
• Premium quality relays, premium quality switches
• Encapsulated high grade volume potentiometer
• Fully aluminium-made remote control
• Full metal housing for optimum shielding

Specifications

• Maximum gain: balanced: 3.7-times / +11.4 dB, unbalanced: 3.5-times / +10.8 dB
• Signal difference left/right: < 1.2 dB (from 0 dB to -40 dB)
• Input resistance: balanced: 2 x 50 k?; unbalanced: 50 k
• Output resistance: balanced: 2 x 34 ?; unbalanced: 34
• Crosstalk: > 100 dB (1 kHz)
• Signal to noise ratio: -103 dB (ref. 500 mV/potentiometer turned to left)
• Distortion (THD+N): 0.0007 % with 1.6 Veff on 10 k? (22 Hz ? 22 kHz)
• Dimensions (mm): 100H x 482W x 375D
• Weight (kg): 10

The ACCUSTIC ARTS PREAMP I - MK 3 is "Handmade in Germany"