Second owner previous owner purchased Dec. 2015 the last unit from Herron Audio before they were discontinued. recently re tubed. No scratches, dents etc. Will only ship to USA address and shipping included to the lower 48 states. $1295 OBO
Perfect tracking volume 166-step control system with unprecedented precision and dynamic range Infinite resolution indirect signal path balance control All-tube design operated conservatively for long life Relay input switching eliminates switching distortion Star grounding for low interference susceptibility and clean signal path Zero feedback - no feedback loops in the audio circuitry Super-low noise High input signal capacity without overload; see technical specifications Gold plated TIFF RCA and ground connectors Hand-picked components for accurate response and consistent unit-to-unit quality Automatic muting at startup and shutdown 72,000 µF of power supply energy storage capacitance 4 levels of high voltage regulation Regulated soft-start DC filament supply Regulated tube bias supply Toroidal power transformer Rugged 0.10" thick aluminum chassis with 0.25" thick heavily anodized faceplate Reversing power line (AC) polarity switch for minimizing line-to-chassis reactive currents and noise pickup Controlled warm-up of tube filaments and high voltage for extended tube life Low plate operating currents for extended tube life and cool operation Front panel indicators for power, filament voltage, and output/mute/monaural Each unit is given an extensive burn-in, including rigorous bench and listening test.
Specifications Tube complement 4 x 6922 Frequency response 1 Hz to beyond 100 kHz, 20 Hz to 20 kHz ±0.1 dB (volume control at 9 o'clock) Volume Control 166-position electronic stepped attenuator Volume Tracking Maximum differential: ±0.1 dB channel to channel Output impedance 100 Ohms nominal at 1 kHz Input impedance 100,000 ohms Power supply 72,000 µF of energy storage 4 levels of high voltage regulation Regulated soft start DC filament supply Regulated tube bias supply Toroidal power transformer Power requirements U.S.: 120 VAC 60 Hz, 30 VA, Fuse 1/2 amp 250 volt slow blow Export: 230 VAC 50/60 Hz, 30 VA, Fuse 1/4 amp 250 volt slow blow Input capacity 18 Volts RMS Overall dimensions 19" wide x 3.5" high x 10" deep
