Tube Power Amp Reviews

Description: Two-channel, tubed stereo (switchable to parallel mono operation) power amplifier. Tube complement: four KT88, three 12AX7A, four 12AT7. Inputs: 1 pair single-ended (RCA), 1 pair balanced (XLR). Loudspeaker outputs: separate gold-plated, 5-way binding posts for 4, 8, and 16 ohms. Preamp output: 1 pair single-ended (RCA). Inputs: 1 pair balanced (XLR), 1 pair single-ended (RCA). Output power: 75Wpc (18.8dBW) into 4, 8, or 16 ohms (stereo), 150W into (21.8dBW) 2, 4, or 8 ohms (mono). Frequency response: 20Hz–20kHz, +0/–0.5dB; 10Hz–70kHz, +0/–3dB. Signal/noise ratio: 100dB, A-weighted (no reference level given). THD: 0.05% at any power level from 250mW to rated power output. Input sensitivity: 1.2V unbalanced, 2.5V balanced. Input impedance: 90k ohms unbalanced, 180k ohms balanced. Damping factor: >14 (wideband). Power consumption: 170W (idle), 360W (full power).
Dimensions: 16.5" (420mm) W by 8.25" (210mm) H by 12" (305mm) D. Weight: 67 lbs (30.5kg) net, 75 lbs (34.1kg) shipping.
Price: $6500. Approximate number of dealers: more than 200. Warranty: 3 years parts & labor, 90 days tubes.
Manufacturer: McIntosh Laboratory, 2 Chambers Street, Binghamton, NY 13903-2699. Tel: (800) 538-6576, (607) 723-3512. Fax: (607) 724-0549. Web: www.mcintoshlabs.com.