compact, high-performance headphone amp with vacuum tubes
tubes provide dynamic, consistently smooth sound
sturdy stainless steel chassis and die cast aluminum panels help minimize resonance
custom-shaped steel with polished mirrored finish
two McIntosh Unity Coupled Circuit output transformers for clean, stable power
power output of 500mW
four amplification vacuum tubes:
two 12AT7 tubes and two 12BH7 tubes
Front-panel headphone controls:
four-position load/gain switch to select impedance that matches your headphones
choose between four impedance ranges: 32-100 ohms, 100-250 ohms, 250-600 ohms, and 600-1000 ohms
transformers designed to deliver full power output to each impedance range
rotary volume knob with fixed or variable control
Front-panel headphone outputs:
unbalanced stereo 1/4" headphone output
balanced left and right 3-pin XLR outputs
balanced stereo 4-pin XLR output
Back-panel analog inputs:
stereo unbalanced RCA audio input
1 pair balanced 4-pin XLR line-level inputs
no input switch, use one input at a time
General Info and Specs:
removable die cast aluminum grille to protect the tubes
detachable AC power cord
Power Control output provides convenient turn-on/off of McIntosh source components
signal to noise ratio: 94dB
frequency response: 20-20,000 Hz (-0.5dB)

Unit Dimensions (W x H x D)
6-1/8" (15.6cm) x 5-3/4" (14.6cm) x 9-1/8" (23.2cm)
Unit Weight
10.5 lbs (4.8 kg)