Description
INPUTS IN ABUNDANCE
With a staggering 16 inputs (9 analog and 7 digital), the C55 becomes the nerve center of your audio universe. Analog inputs include 3 balanced and 4 unbalanced connections, along with 2 phono inputs configurable for either Moving Coil or Moving Magnet phono cartridges to connect your turntable(s). Both phono inputs feature adjustable Gain in 6dB steps from 40dB to 64dB as well as RIAA equalization.
The digital section is housed in our DA2 Digital Audio Module and is powered by an audiophile-grade Quad Balanced, 8-channel, 32-bit Digital-to-Analog Converter (DAC). The DA2 offers an array of connections, including an audio-only HDMI Audio Return Channel (ARC)1 input, ushering your TV sound into a new era through your home stereo system. Dolby® and DTS® multi-channel audio formats are expertly converted to exquisite two-channel audio for a captivating listening experience.
The DA2’s other 6 digital inputs consist of 2 coaxial, 2 optical, 1 USB, and 1 MCT. The USB input supports DSD512 and DXD 384kHz. The coax and optical inputs decode digital music up to 24-bit/192kHz for high resolution audio playback. And to get the best sound quality from the high definition audio on your SACD collection, the MCT input offers a secure, custom DSD connection when paired with our MCT series of SACD/CD Transports. The entire DA2 module is upgradeable and could be replaced by a future module should new digital technologies become available.
INNOVATIVE OUTPUTS FOR PERSONALIZED LISTENING
To connect the C55 to your power amplifier(s), there are 3 stereo sets of variable balanced and unbalanced outputs that offer advanced connection flexibility. All 3 sets of outputs can be active at the same time, and each can send the audio signal of the source component to 3 separate audio systems.
Additionally, the Main output and Output 1 can be used for bi-amping a single speaker system via the built-in adjustable High Pass and Low Pass filters. In this setup, the High Pass outputs could be connected to a vacuum tube amplifier, and the Low Pass outputs could be connected to a solid-state amplifier. The adjustable crossover allows you to optimize the performance of your amplifiers to your speaker’s specifications and to your listening preferences. Output 1 offers trim level control, which allows two different amplifiers to be volume balanced when bi-amping.
Furthermore, Output 2 can be configured as either mono or stereo and can send audio signal to a stereo audio system in another room, to a single mono subwoofer, or to 2 separate stereo subwoofers.2
RETURN OF THE PROCESSOR LOOP
The C55 features the return of the Processor Loop, something not available on the last few generations of McIntosh preamplifiers. The Processor Loop allows you to insert an external signal processor (such as our MQ112 Environmental Equalizer or MEN220 Room Correction System), dynamic range expanders, or other devices without having to place it between the preamplifier and power amplifier(s). This is usually more convenient and can allow for better performance.
The Processor Loop is also the perfect place to connect an analog tape recorder, a high-end cassette deck, or a 3-head reel deck that allows you to record from a source component and hear the recording just seconds later so you can monitor your recordings.
NETWORK CONNECTED FOR CONTROL AND UPDATES
In addition to using the included remote control or the front panel controls, the C55 can be connected to your network which will unlock control options offered through our complimentary Connect app. Designed for both Android and Apple devices, the Connect app can be used to control key functions of the C55 including Volume control as well as Input and Output selection.
Select McIntosh source components3 that have a data cable connected to the C55 will be partially controllable via the app’s Source Control feature. With Source Control, users will be able to control many of the source unit’s functions from the app, such as changing radio stations on a tuner, or playing a disc in a CD Player. This feature will bring added convenience to setups that have a secondary set of power amplifiers and speakers connected to one of the C55’s outputs, such as an outdoor system where you will no longer be forced to go inside to control its basic functionality.
NETWORK CONNECTED FOR CONTROL AND UPDATES
In addition to using the included remote control or the front panel controls, the C55 can be connected to your network which will unlock control options offered through our complimentary Connect app. Designed for both Android and Apple devices, the Connect app can be used to control key functions of the C55 including Volume control as well as Input and Output selection.
- Select McIntosh source components3 that have a data cable connected to the C55 will be partially controllable via the app’s Source Control feature. With Source Control, users will be able to control many of the source unit’s functions from the app, such as changing radio stations on a tuner, or playing a disc in a CD Player. This feature will bring added convenience to setups that have a secondary set of power amplifiers and speakers connected to one of the C55’s outputs, such as an outdoor system where you will no longer be forced to go inside to control its basic functionality.
Another benefit of adding the C55 to your network is the ability to receive periodic firmware updates. These firmware releases can add new features or provide important performance updates. Watch our McIntosh Connect App: Setup and How to Use video to get acquainted with the app.
ADDITIONAL PERFORMANCE FEATURES
- 8-band analog equalizer to fine-tune your music with precision, creating a personalized audio experience (the equalizer can be bypassed if desired).
- High Drive Headphone Amplifier with Headphone Crossfeed Director (HXD®) technology brings an added dimension to headphone listening.
- Home Theater PassThru for seamless integration into your home theater system.
- Has received Roon Tested designation from Roon Labs.
- Power Control lets you easily turn other connected McIntosh components on and off.
- Data Ports can send remote control commands to connected source components.
- Electromagnetic Input Switching for reliable, noiseless, and distortion-free switching.
- Level Trim Adjustment for matching analog input levels to prevent abrupt changes in volume levels.
- Precision balanced, digitally controlled attenuator system for accurate volume control with 0.1dB accuracy.
- Fully regulated power supplies and a special R-core power transformer for stable, noise-free operation.
- Eco-friendly Power Management System that will turn the unit off after 30 minutes of inactivity (can be disabled).
1) The HDMI ARC input will only play audio from a compatible TV. It will not pass video to or from a TV, or play audio from any non-TV source.
2) Only powered subwoofers will work with this preamplifier.
3) Source components compatible with Source Control: MCD201, MCD205, MCD301, MCD350, MCD500, MCD550, MCD600, MCD751, MCD1000, MCD1100, MCD7009, MCD7010, MCD12000, MCT80, MCT450, MCT500, MR85, MR87, MR88, MR89, MR7084, MVP831, MVP841, MVP851, MVP861, MVP871, MVP881, MVP891, and MVP901.
The terms HDMI, HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.
Dolby is a registered trademark of Dolby Laboratories.
DTS, DTS-HD, the Symbol, & DTS or DTS-HD and the Symbol together are registered trademarks of DTS, Inc. © DTS, Inc. All Rights Reserved.
SPECIFICATIONS
ELECTRONIC SPECIFICATIONS
Number of Channels
2
Total Harmonic Distortion
0.005%
Frequency Response
+0, -0.5dB from 20Hz to 20kHz
+0, -3dB from 15Hz to 100kHz
Maximum Volts Out (Balanced / Unbalanced)
16V RMS / 8V RMS
Sensitivity High Level (Balanced / Unbalanced)
900mV / 450mV
Sensitivity Phono (Moving Coil)
0.45mV
Sensitivity Phono (Moving Magnet)
4.5mV
Signal To Noise Ratio (High Level)
100dB
Signal To Noise Ratio (Moving Coil)
80dB
Signal To Noise Ratio (Moving Magnet)
82dB
Voltage Gain (High Level)
15dB
Voltage Gain (Moving Coil)
Selectable 40dB, 46dB, 52dB, 58dB, or 64dB
Voltage Gain (Moving Magnet)
Selectable 40dB, 46dB, 52dB, 58dB, or 64dB
Input Impedance (Balanced / Unbalanced)
44K ohm, 22K ohm
CONNECTIVITY
Balanced Input
3
Unbalanced Input
4
Phono Input Moving Coil
Up to 2 (unit has 2 Phono inputs; each is user configurable as either Moving Coil or Moving Magnet)
Phono Input Moving Magnet
Up to 2 (unit has 2 Phono inputs; each is user configurable as either Moving Coil or Moving Magnet)
Upgradeable Digital Audio Module
Yes: DA2
Digital Coaxial Input
2
Digital Optical Input
2
Digital MCT Input
1
Digital USB Input
1
HDMI (ARC) Input
1
Digital AES/EBU Input
0
Balanced Fixed Output
0
Balanced Variable Output
3
Unbalanced Fixed Output
0
Unbalanced Variable Output
3
Headphone Output
1/4″ High Drive with Headphone Crossfeed Director (HXD®)
Input Level Match
Yes, +/- 6dB
Home Theater PassThru
Yes
Unbalanced Analog Connector Type
Premium gold-plated solid brass
Service Port
1
Network Connection
1
CONTROL
Tone Controls
8-band (each band adjustable ± 12dB )
Tone Bypass and Input Assign
Yes
RS232 Control Input
Yes
Power Control Output
1 Main, 4 Trigger
Rear Panel Data Port
6
Rear Panel IR Sensor Input
Yes
GENERAL SPECIFICATIONS
Multi-Chassis or Single
Single, two-layer
Output Meters
Yes
Vacuum Tube or Solid State
Solid State
Power Consumption (On)
75 Watts
WEIGHTS & DIMENSIONS
Unit Dimensions (W x H x D)
17.5″ (44.45cm) x 7.625″ (19.4cm) x 16.5″ (41.9cm)
Unit Weight
28 lbs (12.5 kg)
Shipping Weight
43.5 lbs (19.7 kg)
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