Vacuum Tube Logic TL-7.5 Reference line preamplifier Specifications

Sidebar 1: Specifications

Description: Tubed, two-chassis, remote-control line preamplifier with MOSFET output stage. Tube complement: two 12AX7. Inputs: 4 pairs balanced/XLR or RCA single-ended, 4 pairs single-ended/RCA. Outputs: 2 pairs balanced out, 2 pairs single-ended RCA out, 2 pairs single-ended RCA buffered Tape Out. Remote-control functions: Power, Source Select, Volume up/down, Mute, Fade, Balance, Phase Reverse. Voltage Gain: 20dB to RCA outputs, 26dB to XLR outputs. Output impedance: 25 ohms (150 ohms maximum at 10Hz). Input impedance: 50k ohms (20k ohms minimum). Frequency response: 1Hz-100kHz, +0/-1dB (20Hz-100kHz, +0/-1dB into 600 ohms with 900pF, 20' interconnect cable). Maximum output voltage: 45V, 10Hz-200kHz into 600 ohms at 1% THD. Channel separation: >100dB at 1kHz (>80dB at 20kHz). Power consumption: 150W.
Dimensions: Control chassis: 17.5 W by 4" H by 17.5 D. Audio chassis: 17.5 W by 6" H by 17.5 D. Shipping weight: 75 lbs.
Serial numbers of units reviewed: 02194976 (audio chassis) and 02194977 (control chassis), listening; 03235601 (audio chassis) and 03235602 (control chassis), measurements.
Price: $12,500. Approximate number of dealers: 35.
Manufacturer: VTL, 4774 Murrieta Street, Suite 110, Chino, CA 91710. Tel: (909) 627-5944. Fax: (909) 627-6988. Web: