CP-800 Stereo Preamplifier / Processor


The vast majority of high end preamplifiers available today are direct descendents of products that have been made for decades, rooted in an all-analog world. The CP-800 is something new. It combines key building blocks of a contemporary high-end audio system in a unique way to improve and shorten the signal path. New technologies are applied to realize the benefits of modern computer-based audio. Now, a CD ripped to a computer can sound better than if played in a CD player; convenient and feature-rich access to your music library is possible with state-of-the-art playback; a Classé-designed Switch Mode Power Supply (SMPS) with Power Factor Correction (PFC) delivers higher performance at a lower price; there is no compromise at an affordable price. And there is much more…



A rear panel Ethernet connection offers streaming options including Apple’s AirPlay and DLNA, where sources benefit from special handling to accommodate files up to 192 kHz with the CP-800’s own oscillators controlling timing for D-to-A conversion. Convenience never sounded so good.

IP Control
When connected to your home Network, the Classé App (available free of charge in the Apple App store) running on Apple iOS devices offers a sophisticated alternative to the IR remote.

Having a dedicated computer in your listening room doesn’t have to mean noisy fans and bulky monitors. Simple solutions like Apple’s Mac Mini or an inexpensive laptop can be installed out of site and operated remotely. Connect by HDMI to your TV, use a wireless keyboard and mouse when necessary and connect to the CP-800 by USB for audio, then control with an iOS device, Smartphone or tablet. Classé’s unique implementation of asynchronous USB audio will render studio-quality sound from properly ripped CDs and high-resolution music downloads up to 192 kHz.

Bass management
No matter how well your speakers reproduce bass, they are almost certainly not located in the optimum place in your room to do so. The interaction of your speakers and the room will result in signal cancelations or dips at certain frequencies at the listening position; no amount of EQ can solve this problem. The solution is mono or stereo subwoofers, outputs for which are available from the CP-800 with selectable crossover frequency and slope in the digital domain. The result is deep, smooth bass response without adding analog circuitry to the L&R channel signal paths.

Regardless where your speakers, subwoofer(s) and listening chair are in relation to each other, there will likely be room modes that can only be addressed with equalization. In most rooms, the three primary dimensions contribute to three low frequency modes where the room actually increases the level causing peaks at those frequencies. The CP-800 offers parametric equalization to help address these real world problems. Performed in the digital domain, these high quality filters allow optimization of low frequency response without adding analog circuitry to the L&R channel signal paths.

Tone Control
Banished from legitimate high-end preamps since the sixties, the tone control makes a come-back in the CP-800, but with a modern implementation. Tone controls typically mean additional analog circuitry in the signal path. The CP-800 introduces a flexible tone control feature that is entirely digital. If you’ve ever wanted to soften a recording’s top end a little or add a little warmth, you will appreciate the convenience and subtlety of the CP-800’s Tilt tone control feature. After more than forty years, the tone control is back, and now it works properly and without compromise.

Analog quality
Make no mistake, the CP-800 is also our best analog preamplifier; with fully balanced circuitry and completely isolated symmetrical left and right channels, your analog sources will sound better than ever. The CP-800 makes digital processing available to all sources, but when you want pure analog, the Digital Bypass option switches off the digital clocks while the CP-800 handles the signal in the analog domain.

Have it all
The CP-800 puts world-class performance into one flexible and attractively priced chassis. Separate CD players and USB DACs require additional circuitry and interconnect cables plus a separate analog preamp, giving the CP-800 an obvious comparative advantage in both performance and value. The additional features like Bass management, PEQ and Tone Control make better real world performance a reality. If you are building a no-compromise high-end audio system, the CP-800 is unique. It is the first and only preamp/processor that lets you have it all.



Frequency response


8 Hz - 200 kHz < 1 dB, stereo analog bypass
8 Hz - 20 kHz < 0.5 dB, all other sources

Channel Matching


better than 0.05 dB(left to right)

Distortion (THD+noise)


.0005%, digital source/bypassed analog source
.002%, processed analog source

Maximum input level


2 Vrms (DSP), 4.5 Vrms (bypass)

Maximum input level


4 Vrms (DSP), 9 Vrms (bypass)

Maximum output level


9 Vrmsd

Maximum output level


18 Vrms

Gain Range


-100 dB to +14 dB

Input impedance


50 kΩ (balanced)
100 kΩ (single-ended)

Output impedance
(main output)


300 Ω (balanced),
100 Ω (single-ended)

Signal-to-noise ratio


104 dB, bypassed analog source (ref. Bal. 4 Vrms input,
101 dB, processed analog sourceunweighted)
105 dB, digital source (ref. full-scale input, unweighted)

Channel separation


better than 100 dB



better than -130 dB @ 1 kHz(any input to any output)

Standby power


<1 W

Rated power


53 W

Mains Voltage


90-264 V, 50/60 Hz

Overall dimensions


Width: 17.5” (445 mm)
Depth: 17.5” (445 mm) (excluding connectors)
Height: 4.78” (121 mm)

Net weight


23 lbs (10.43 kg)

Shipping weight


33 lbs (15 kg)

Made for
iPod touch (5th generation) iPod nano (7th generation)
iPod touch (4th generation) iPod nano (6th generation)
iPod touch (3rd generation) iPod nano (5th generation)
iPod touch (2nd generation) iPod nano (4th generation)
iPod touch (1st generation) iPod nano (3rd generation)
iPod classic iPod nano (2nd generation)

Made for
iPhone 5 iPhone 3GS
iPhone 4S iPhone 3G
iPhone 4 iPhone

Made for
iPad (4th generation) iPad 2
iPad (3rd generation) iPad
iPad mini

Airplay works with iPhone, iPod, and iPod touch with iOS 4.3.3 or later,
Mac with OS X Mountain Lion, and Mac and PC with iTunes 10.2.2 or later



Product Info Sheet

CP-800 - Product Info Sheet - English


  • Latest Firmware for original CP-800 Models: Version (Date: 4 July 2016)
  • Latest Firmware for CP-800 Models with Digital Upgrade Board installed: V (Date: March 2014)

The DOWNLOAD Acrhive contains a "unified update package" that will auto-detect your model and install the appropriate Firmware components.  The release notes of the package state “Release_Notes_CP-800_v2.0.1.4”, the package itself is for both models.

How to Check and Update Firmware

How to check the current Firmware of your CP-800

  • Press the MENU button on the left of the touchscreen

How to update CP-800 Firmware

  • Download the latest CP-800 released software (.zip file) and extract/unzip the entire CP-800 folder onto a USB stick. The USB stick should then have a folder named CP-800 containing the latest software (if the folder is located within another folder or if the folder’s name is different in any way, the update will not proceed).
  • Confirm that you have a folder named CP-800 on the USB stick then eject the USB stick from your computer. Make sure the unit is powered off by using the rear panel switch before plugging the USB stick into the front panel USB port of the CP-800.
  • Power up the CP-800. The update process will begin automatically. A series of red, green, blue and cyan LED flashes will be seen on the front of the CP-800 then, a cyan LED will blink for approximately 3 minutes. This will continue until you reach the calibration step.
  • You will then see a white screen with a small target in the upper left corner. For an ideal screen calibration, make use of a stylus or the tip of an eraser head. Press the target then do the same in the lower right corner and center of the screen as prompted.
  • Note: If you missed to hit the center of the icon it will restart on the upper left again

  • For V1.0.6 and higher, after the touchscreen calibration, the unit will enter the normal operating mode. Remove the USB key, the CP-800 can now be used normally.

  • For V2.0.1.4 and higher with a digital audio board supporting Ethernet, the following message “Please wait – Software update continues – Do not power off” will be displayed. The front LED will flash cyan and the firmware download will continue for approximately 5 more minutes.
    When completed, the unit will enter the normal operating mode. You can now remove the USB stick from the CP-800.

What to do when your Firmware Update fails

In most cases the software update fails because of an issue with the USB key (previous vendor formatting, file allocation issues).  We recommend to buy a clean new USB key and repeat teh Firmware download and update procedure. 

  • simply power down the unit and remove the USB key, the unit should revert back to its previous Firmware Version when your power on again
  • insert the USB key into your local computer and open the USB key (file explorer)
  • you will notice that 2 LOG files have been written to the USB key. Copy these log file to your local computer.  You can send them to Classé Tech Support for further evaluation

Firmware History

  • Version 106v2014_2x2 - January 2014 - download
  • Version 105v2013_Sharp - November 2013 - download
  • Version 1.0.4 - August 2012 - download
  • Version 1.0.3 - August 2012 - download
  • Version 1.0.2 - April 2012 - download
  • Version 1A01_German - November 2011 - download
  • Version 1.0.1 - October 2011 - download
  • Version 1.0.0 - June 2011 - download

Owner's Manual

Setup Guides

  • Ethernet Set-Up Guide - English 
  • AirPlay & DLNA Tips - English
  • Common issues when using JRiver - English
  • RS-232 Automation Codes - English

CP-800 Digital Upgrade Board - Network tips

All CP-800 Models have an Ethernet Port on the Rear Panel, but only those Models equipped with the CP-800 Digital Upgrade Board will have the necessary network card for Network Audio Playback.

Network Setup

•Use good quality CAT5 or CAT6 Ethernet cable;
•Preferably, connect the CP-800 directly to your Network Router;
•Make sure the Router Ports mentioned below are open and accessible to the CP-800*);

*) Routers provided by Cable Companies or Internet Service Providers will auto-update from time to time, most often whilst you are asleep. If the CP-800 starts acting up, then the first thing to do is to see if the Router hasn't simply closed ports during the Auto-Update. The second measure is to reboot (power on/ power off) both the router as well as the CP-800.

Required Router Ports

Make sure that the following ports are open on the Router. Without these ports, the unit will not perform its tasks.

Apple AirPlay/Bonjour (Music playback)
•Port 554 TCP/UDP [Real Time Streaming Protocol]
•Port 3689 TCP [Digital Audio Access Protocol]
•Port 5353 UDP [Multicast DNS]

DLNA/UPnP (Music playback)
•Port 1900 UDP
•Port 5000 TCP

Classé App
•Port 35295 UDP
•Port 35296 UDP [Multicast]

TCP Control (RS232 Automation over IP, for Home Automation Systems like Crestron, SAVANT or Control 4)
•Port 50001 TCP

Naming your unit

We strongly suggest you give your unit a "Name" that will allow you to find it easily on your Home Network. In order to do this, you will need to read out the assigned IP-Address on the touchscreen, the type this IP address into a Web Browser on a computer (laptop, desktop) connected to the same network. A CP-800 Web Page will appear, allowing you to change the name of the unit.

Static IP Address or assigned IP Address?

1. We suggest Owners who use the unit in a stand-alone setting, primarily for Network Audio Playback, to use the default setting (DHCP-assigned IP Address): The unit will get an IP Address assigned by the Home Router

2. For those Owners who use the CP-800 through Home Automation (e.g. Crestron, Control4, Savant), a fixed IP Address may be necessary. See the instructions in the Owner's Manual. Once you have assigned a fixed IP Address, you will need to make sure that your Router respects this address. Depending on your Router, you may need to:
•make sure that the fixed IP Address falls outside of the range of "Reserved IP Addresses" that DHCP will use;
•make sure that the SSP's MAC Address is registered in the Router. Since a SSP will not display its MAC Address on touchscreen, we suggest that you use an App like "Fing" to look up the SSP's MAC Address.

Home Automation

The CP-800 can be controlled via Infrared Remote Control and via RS-232.  The latter is available via a DB-9 connector and using the Ethernet Connector (RS232-over-IP).

IR Remote Control Codes

RS232 Protocol

Automation Drivers

- Crestron Driver

- Control4 Driver

- Savant Driver

Archive User Settings

Archive User Settings to Internal Memory

Power on the unit, and press MENU. Using the remote control, press F1, F2, F3, F4 in order. This will change the display to a Tech Menu.

Choose the 'Archive Settings' button prior to selecting the Restore Factory Defaults. After the unit has been reset, repeat the above procedure but now choose 'Restore Settings' to restore the programmed settings to the unit.

Select 'Restore Factory Defaults' to reset the unit. If there are programmed settings that need to be saved,

Factory Reset

A Factory Reset (called "Restore Defaults") erases all User Settings and resets the unit's parameters to factory default.  

A Factory Reset is useful when you want to program your unit from scratch, when you sell your unit to another customer or when your unit has unexpected behavior that may be related to conflicting settings.

Reset Procedure

Power on the unit, and go to the Menu. Using the remote, press F1, F2, F3, F4 in order. This will change the display to a Tech Menu. Select 'Restore Factory Defaults' to reset the unit. If there are programmed settings that need to be saved, choose the 'Archive Settings' button prior to selecting the Restore Factory Defaults. After the unit has been reset, repeat the above procedure but now choose 'Restore Settings' to restore the programmed settings to the unit.



  • The Sigma 2000i can operate on AC Voltages between 110V - 240V.  
  • Make sure to change the AC Fuse (rear) to match the AC Voltage of your country. 

When you change the fuse to accomodate a different AC Voltage, please contact Classé to obtain a new sticker for the back of your unit that indicates the newOperating Voltage. Without this, another user/customer might make a mistake in the AC Voltage and Fuse Value.


  • The Sigma 2200i has one fuse accessible via the rear panel;
  • Make sure that the AC Fuse corresponds to the AC Voltage offered;

Fuse Specifications

  • For 100-120 Volts

Fuse Value: T6.3AH 250V 
Description: IEC time lag, high breaking capacity, 6.3A 250V

Classé Part No. 51764877-00 0
Schurter Part No. 0001.2512
Littlefuse Part No. 21506.3


  • For 220-230-240 Volts

Fuse Value: T3.15AH 250V
Description: IEC time lag, high breaking capacity, 3.15A 250V)

Classé Part No. 51764794-00
Schurter Part No. 0001.2509
Littlefuse Part No. 2153.15

Drawings 2D/3D


Info Sheet

CP-800 Digital Input Board Upgrade Kit

Digital Input Board for first-generation CP-800s (FC04073), adds 192 kHz for USB Ethernet for streaming AirPlay and DLNA, and IP control for use with Classé App. May be field-installed by an authorized Classé dealer.

PPM Phono Preamp Module

Classé - PPM Phono Preamp Module
PPM Phono Preamp Module

The PPM Phono Preamp Module can add phono input capability to either version of the CP-800, the Sigma SSP and SSP MkII and the Sigma 2200i.

Important: Due to the specific location of the PPM Module in the CP-800, this Module can only be installed in a CP-800 by Classé or one of its authorized Service Centers.  Please contact us directly if you wish to know more.


Gain can be set to support MM (Moving Magnet, 42dB) or MC (Moving Coil, 62dB) type cartridges and a range of custom loading options can be selected via dip switches. Please make sure that we know your Cartridge Sensitivity before we install the Phono Board in the unit since the dip switches are not easily accessible after installation anymore.


Replacement Shipping Box

A replacement Shipping Box can be ordered with Classé. The box is made out of Coroplast®, which is a strong and waterproof material.  Semi-rigid foam inserts ensure the best possible protection during storage and transport. Please inquire with your local Classé Dealer or contact Classé directly.

*) For shipping Legacy units (made before Delta I series) we recommend using the original box if still intact, and to put this box with at least 2 inches of semi-rigid foam into a new corrugated box.