The C220 Vacuum Tube Preamplifier possesses all the flexibility modern systems require while maintaining the highest-quality two-channel performance. All signal switching is done electromagnetically with switch contacts sealed inside glass cylinders filled with an inert gas. Locating these switches adjacent to the input/output jacks virtually eliminates crosstalk, and their sealed construction guarantees trouble-free operation.
The C220 allows for electronic, independent level adjustment for each of the eight source inputs via the front panel or remote control. Channel balance is electronically adjusted and stored in memory. A moving magnet phono stage incorporates time-proven 12AX7 Vacuum Tubes, for simplicity and superior performance. Low-distortion bass and treble controls, invaluable for older recordings, provide a wide range of tonal adjustment and may be bypassed when not needed.
C220 Tube Preamplifier Features
ADVANCED VOLUME CONTROL
The McIntosh two stage VRV (Variable Rate Volume) Control is electronic in
action. It never wears or needs cleaning, and keeps channels matched to within
an amazing 1/10th of 1dB.
CUSTOMIZABLE INPUTS
The inputs can be renamed from an internal list to match the needs of the
user. Unused inputs can be deleted from the display and level matching between
inputs is provided.
POWER SUPPLY DESIGN
Multiple stages of regulation ensure top performance unaffected by power
fluctuations. The R-Core transformer radiates no hum that could otherwise
compromise the preamplifier’s low noise floor.
- Complete Input Versatility
- 7 Unbalanced High-Level Inputs
- 2 Balanced (XLR) Inputs
- Moving Magnet Phono Input
- Multi-Output Flexibility
- 3 Pairs of Unbalanced Outputs
- 2 Pairs Switched plus 1 Pair Fixed
- 1 Pair Balanced (XLR) Outputs
- 1/4” Headphone Jack
- Front Panel Headphone Mute Mode
- Hand Held System Remote
- External Remote Sensor Jack
- Fiber Optic Panel Illumination
C220 Tube Preamplifier Specifications
FREQUENCY RESPONSE
+0, -0.5dB from 20Hz to 20,000Hz
TOTAL HARMONIC DISTORTION
0.08% from 20Hz to 20,000Hz
MAIN OUTPUT
2.5V for rated input
MAXIMUM VOLTAGE OUTPUT
8V RMS Unbalanced, 16V RMS Balanced
SENSITIVITY (for rated output)
High Level: 450mV Unbalanced, 900mV Balanced
Phono: 4.5mV
SIGNAL-TO-NOISE RATIO (A-Rated)
High Level, 90dB below rated output
Phono: 80dB below 10mV input
INPUT IMPEDANCE
High Level: 22K ohms
Phono: 47K ohms; 65pF
MAXIMUM INPUT SIGNAL
High Level: 5V Unbalanced, 10V Balanced
Phono: 50mV (@1,000Hz)
OUTPUT IMPEDANCE
250 ohms
VOLTAGE GAIN
High Level to Tape Output: 0dB
High Level to Main Output: 15dB
Phono to Main Output: 55dB
HEADPHONE OUTPUT IMPEDANCE
16 ohms to 250 ohms
TUBE COMPLIMENT
Phono Circuitry: 2-12AX7A
High Level Circuitry: 2-12AX7A
POWER REQUIREMENTS
100 Volts, 50/60Hz at 75 Watts
110 Volts, 50/60Hz at 75 Watts
120 Volts, 50/60Hz at 75 Watts
220 Volts, 50/60Hz at 75 Watts
230 Volts, 50/60Hz at 75 Watts
240 Volts, 50/60Hz at 75 Watts
OVERALL DIMENSIONS (H x W x D including front panel, knobs and cables)
6” (15.24cm) x 17-1/2” (44.45cm) x 18” (45.72cm)
WEIGHT
21 lbs. (9.59Kg) net
37.5 lbs. (17.1Kg) in shipping carton
