C1100 2-Channel Vacuum Tube Preamplifier

The C1100 preamplifier brings a new level of performance and luxury to McIntosh’s heralded preamplifier offerings – evidenced by its high level inputs having t​he lowest noise of any McIntosh preamplifier ever produced. It utilizes a two-chassis design where the control and power sections are completely separate from the audio section. Absolute isolation of a preamplifier’s two main functions – control and sound – is achieved by this unusual but effective design and will provide you with the purest sound reproduction possible for generations of listening enjoyment.

Winner of prestigious Grand Prix Award for its "rich and accurate body of sound." - Stereo Sound

The C1100 is comprised of the C1100 Controller and the C1100 Vacuum Tube Preamplifier. Inside each, the left and right channels are electrically and mechanically isolated from each other to allow true dual mono operation - resulting in the ultimate stereo separation and sonic purity. The two units are connected together via a pair of specially designed, high performance umbilical cables that are shielded to prevent outside noise from leaking into the audio signal. While they are two separate units, when connected they act as one and are easy to control and operate from the included remote control or the C1100 Controller front panel. Both units’ chassis are comprised of polished stainless steel and hairline brushed black Titanium stainless steel, offering a new degree of richness and refinement.

"Distortion is very low indeed at just 0.00009 - 0.0005%." - Hi-Fi News

All power control, data ports and external control connections are located in the C1100 Controller; the introduction of a dual microprocessor allows for an improved robustness of the control system. The C1100 Vacuum Tube Preamplifier houses the audio connections and circuitry, featuring a total of 12 analog inputs: 6 balanced, 4 unbalanced, plus adjustable loading Moving Magnet and Moving Coil phono inputs. For outputs, 2 sets of balanced and 2 sets of unbalanced connections provide flexibility in connecting to your amplifier. Twelve vacuum tubes (6 each of 12AX7a and 12AT7) power the tube preamplifier. Compared to the C1000 preamplifier which had 8 tubes, the additional 4 tubes in the C1100 lowers its dependency on any solid-state support. The amplifier circuit has much higher common mode rejection, so any noise introduced by interconnect cables is significantly reduced. For personal listening, the headphone jack features a higher output than any of our other preamplifiers, while Headphone Crossfeed Director (HXD®) brings a new depth and spatiality to your music. The Home Theater Pass Through feature allows for seamless integration into your existing multi-channel home theater system.

For digital music sources, the C1100 can be connected to and used in conjunction with its digital counterpart – the D1100 Digital Preamplifier​. Like the C1100, the D1100 employs a dual mono design and features the most advanced digital-to-analog converter (DAC) we’ve ever used in order to reproduce your digital music with the same level of excellence that the C1100 gives to your analog sources. When connected, the C1100 takes over control of the D1100 and its 9 digital inputs, resulting in a single and easy to use interface.

"The C1100 is outstanding... A fantastic preamplifier any way you look at it. Highly recommended if you are a lover of the brand, and if you aren't, this is the perfect piece to start your journey." - Tone Audio

The C1100 preamplifier employs fully balanced circuitry to match the level of performance achieved in any of our Quad Balanced amplifiers. With classic McIntosh black glass front panels, blue meters, knobs, stainless steel chassis, illuminated logos and custom machined brushed aluminum end caps, the C1100 makes a visual statement in addition to its audio prowess. It can be paired with a variety of McIntosh amplifiers, speakers, room correction devices, CD players, turntables, tuners and other source components to make a complete home audio system. Contact your local dealer​ to learn more.
​​​​​​​​​​​​​​​​​​​

Electronic Specifications

Total Harmonic Distortion

High Level: 0.005%
Phono: 0.05%

Frequency Response

+0, -0.5dB from 20Hz to 20,000Hz
+0, -3dB from 10Hz to 100,000Hz

Maximum Volts Out (Balanced / Unbalanced)

20/10 V RMS

Input Impedance (Balanced / Unbalanced)

50K ohms, 25K ohms

Phono Voltage Gain

Moving Magnet: 40dB
Moving Coil: 60dB

High Level Voltage Gain

To Main Output and Outputs 1 & 2: 15dB
To REC/FIXED Output: 0dB

Signal To Noise Ratio

107dB

Dual Mono Power Supply

Yes

Dual Mono, Fully Balanced

Yes

Connectivity

Balanced Input

6 Stereo

Unbalanced Input

4 Stereo + 2 Phono

Phono Input Moving Coil

1 (adjustable)

Phono Input Moving Magnet

1 (adjustable)

Digital Coaxial Input

0

Digital Optical Input

0

Digital MCT (DIN) Input

0

Digital USB Input

1 (for system update only)

Digital AES/EBU Input

0

Balanced Fixed Output

0

Balanced Variable Output

2 Stereo

Unbalanced Fixed Output

1 Stereo

Unbalanced Variable Output

1 Stereo

Headphone Output

1/4" High Drive with Headphone Crossfeed Director (HXD®)
Selectable headphone impedances of: 16 ohms - 40 ohms, 40 - 150 ohms, 150 - 600 ohms

Record Processor Loop

Yes

Input Level Match

Yes, +/- 6dB

Home Theater PassThru

Yes

Control

Tone Controls

No

Tone Bypass and Input Assign

No

RS232 Control Input

Yes

Power Control Output

1 Main, 2 Output, 4 Trigger

Rear Panel Data Port

8

Rear Panel IR Sensor Input

Yes

General Specifications

Multi-Chassis or Single

Multi Chassis (C1100C plus C1100T)

Output Meters

C1100C: No
C1100T: Yes

Vacuum Tube or Solid State

Tube, (6) 12AX7a and (6) 12AT7

Power Consumption (On)

75 watts

Weights & Dimensions

Dimensions (W x H x D)

Each chassis:
17.5" (44.45cm) x 6" (15.24cm) x 18" (45.7cm)

Weight

C1100C: 27 lbs (12.3 kg)
C1100T: 25 lbs (11.3 kg)

Shipping Weight

C1100C: 43.5 lbs (19.7 kg)
C1100T: 39.5 lbs (17.9 kg)

Featured Products In This Category

C1100

2-Channel Vacuum Tube Preamplifier

  • Separate audio & control sections
  • 12 analog inputs including MC & MM phono

D1100

2-Channel Digital Preamplifier

  • Reference level digital preamp and DAC
  • Use as standalone unit or with C1100

C52

2-Channel Preamplifier

  • Supports DSD64, DSD128 & DSD256 files
  • 8 band analog equalizer; 16 inputs

C2600

2-Channel Vacuum Tube Preamplifier

  • Supports DSD64, DSD128 & DSD256 files
  • Upgraded tube circuitry design

C47

2-Channel Preamplifier

  • Supports DSD64, DSD128 & DSD256 files
  • 7 analog and 5 digital inputs

MP1100

2-Channel Vacuum Tube Phono Preamplifier

  • Fully balanced phono stage
  • 5 equalization curves; 2 noise filters

MP100

2-Channel Phono Preamplifier

  • Moving Coil & Moving Magnet inputs
  • Analog outputs + USB for ripping to computer

C22

2-Channel Vacuum Tube Preamplifier

  • Retro styling, modern performance
  • 10 inputs, 4 outputs

D150

2-Channel Digital Preamplifier

  • Supports DSD and DXD
  • 2 Coax, 2 Optical, 1 USB Input

C2500

2-Channel Vacuum Tube Preamplifier

  • Combines legendary McIntosh tube sound with digital high resolution audio playback

C48

2-Channel Preamplifier

  • 5 band tone controls
  • Analog inputs
Recommended Products

MC2KW

1-Channel Amplifier

  • 2,000 Watt Quad Balanced Monoblock
  • 3 speaker terminals for tri-wiring

D1100

2-Channel Digital Preamplifier

  • Reference level digital preamp and DAC
  • Use as standalone unit or with C1100

MCT450

2-Channel SACD/CD Transport

  • ​Balanced, coax, optical & DIN outputs
  • Compatible with all common disc types

MT10

2-Channel Precision Turntable

  • Belt drive; MC cartridge
  • Illuminated speed meter

MR87

AM/FM Tuner

  • Proprietary radio-frequency circuitry
  • Advanced low distortion performance

MB100

Media Bridge

  • Hub for all your digital media
  • Enjoy your favorite streaming services

MEN220

Room Correction System

  • Works on 1/12 Octaves
  • 2-Way Electronic Crossover for Bi-amping

MPC1500

Power Controller

  • Isolation Transformer to Shield Components
  • Connect up to 12 components

XRT2K

Floor Standing Loudspeaker System

  • 2,000 Watts of Power
  • Tri-wire a​nd tri-amp capabilities

Balanced Audio Cables

  • Gold plated XLR connectors
  • ​Standard lengths: 1 or 2 meters (custom lengths availabl...

Power Control Cables

  • Heavy duty construction
  • Standard lengths: 1 or 2 meters (custom lengths available)