Description: Two-channel, tubed stereo preamplifier with tube-rectified power supplies. Supplied with 1:9 and 1:18 Cinemag step-up transformers and remote volume control. Tube complement, line: two 12AX7 (ECC83) for voltage gain; one 12BH7 as driver; for phono: two 12AX7 (ECC83) for voltage gain, one 12BH7 as driver; two 5AR4 rectifiers. Inputs: two pairs unbalanced (RCA), one pair balanced (XLR). Outputs: two pairs unbalanced (RCA). Frequency response: 10Hz–22kHz (–3dB @ 2V RMS). Input impedance, line: 50k ohms unbalanced (RCA), 600 ohms balanced (XLR); phono: 47k ohms MM, 100 ohms MC. Output impedance: 300 ohms. Sensitivity: 9.5V RMS at 2V RMS in (line). Max gain, line: 14dB; phono (before step-up transformers): 40dB. THD: 0.004% at 1kHz, 2V RMS out. THD+N: 0.02%. Power consumption: 45W.
Dimensions: 19½" (495mm) W × 7" (178mm) H × 15" (381mm) D. Weight: 60lb (27kg).
Finishes: Stock black with white silkscreen; gray/black combo. Custom finishes supplied by Cardinal Powder Coat.
Serial number of unit reviewed: 008.
Price: $25,000. Sold direct to consumer. Warranty: Lifetime, transferable.
Manufacturer: Ampsandsound, 33 Sunswept Mesa, Aliso Viejo, CA 92656. Tel: (949) 636-9076. Email: sales@ampsandsound.com. Web: ampsandsound.com.
Ampsandsound Yellowstone preamplifier Specifications
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