B.M.C. Audio CS3 Integrated/ Power Amp

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The CS3 is as easy to use as any amplifier: Connect the AC power, the input sources and the speakers. Power on, select an input, adjust the volume – enjoy!

In a complete B.M.C. system using the optical DIGM gives control of the volume to the Pre-Amp/Dac with the further advantage of being able to use the CI input.


Call Choice Hifi on 020 8392 1959 or to enquire about this product!


B.M.C.’s CS3 volume control DIGM = Discrete Intelligent Gain Management avoids both unnecessary high gain and additional amplifier stages, as well as attenuating the input signal, as it is done in traditional solutions. The gain required for the desired sound level is set in the amplifier stage.

The great power supply with 2kW toroid transformer, Balanced-Current Capacitors and complete stabilization, for the power section as well, is designed unusually extensive and lavish. This is the ideal base for a silent background and for playing the very finest detail, as well as explosive dynamics.

AMP CS2 offers 3 different Operating Modes
1: The classical Integrated Amplifier mode, with the volume controlled at the unit-or by the remote control (RC1). (The volume is changed by DIGM.)
2: The classical Power Amplifier mode, with volume controlled by a preamplifier. With the advantage of a gain setting by DIGM,
3: In a full B.M.C. Audio chain with OPTOCONTROL offers DIGM connection set by a B.M.C. DAC or Pre Amp and the advantage of CI. The DIGM function will as per Amplifier mode (1).

The big advantage of this operating mode is: You can use the input XLR 1 as a CI (Current Injection) input with it’s audiophile advantage of an advanced and exceptional signal path.

Brand: B.M.C Audio GmbH

Model Name/Number: CS3

Price (RRP): £5495

Product Information:

Output Power
200 Watt / 8 Ohm, 360 Watt / 4 Ohm
Frequency Response 20Hz – 20kHz, 1W (DIGM Mode)
Bandwidth 1W / -3dB (DIGM Mode)
2Hz – 180kHz
The following Signal/Noise Ration can be achieved in DIGM Mode only
Signal/Noise at DIGM 57 (relative to Pmax)
1 10dB
Signal/Noise at DIGM 40 (relative to Pmax)
Signal/Noise at DIGM 40 (relative to 1W)
THD+N at 1 Watt, 1kHz
THD+N from 50mW to 50W, 1kHz
under 0.02%
THD+N under 0,1%
from 0.3 mW to 150 Watt
Damping Factor (8 Ohm, 10W)
Inputs Balanced
2 XLR & (1 Balanced Current Injection XLR-CI)
Input unbalanced
3 Unbalanced RCA
Input Impedance
50 kOhm to ground, 100 kOhm differential at XLR,
Input Impedance, CI Current Injection Input
1.5 kOhm to Ground, 100kOhm differential at XLR
Input Sensivity
max. 750 mV/RCA, 1.5V/XLR
Volume Adjustment (with external DIGM Control)
DIGM in 66 precise 1dB increments
Speaker Output
1 Stereo-Pair with gold plated binding posts
AC Voltage
AC 100V, 115V or 230V, 50/60 Hz
Power Consumption
110W – 800W
Dimensions Enclosure (W x D x H)
435 × 405 × 138 mm
Dimensions incl. Legs, Knobs and Terminals
435 × 450 × 150 mm
Note: Technical specifications and design are subject to change without notification.

Age: New

Condition: New

Voltage: 220/240/50Hz

Finish/Colour: Silver

Packaging? Yes

Accessories? Yes

Item Location: In Stock

Status: New

  1. Alain Abensur


    Outstanding Special Features of the B.M.C. Amplifier

    The human sense of hearing is surprisingly unimpressed by the perfect test results of customary measuring methods. This is why traditional transistor amplifiers come under fire again and again, although tube amplifiers are not real alternative as they have clearly audible characteristics.
    Several innovations were needed to build an amplifier that does not impose its own sound on the music. These innovations go way beyond the standard circuits and may be not easily understood, even by technologists.

    Current Injection (CI), Discrete Intelligent Gain Management (DIGM), and Load-Effect Free (LEF) circuits are our own, original designs. Used together and consistently executed, they lead listeners into a new world of tonal experience.

    Current Injection

    Low impedance current input lets the original current of a signal source flow through the amplifier circuit until the desired loudspeaker output voltage is attained.

    Discrete Intelligent Gain Management

    Precise alignment of the amplifier to the desired volume occurs only on the level of the output voltage. This avoids unnecessary input signal attenuation, as well as excessive amplification.
    Less amplification = less distortion and noise, which in turn = more natural musical quality.

    Load Effect Free

    The LEF output stage takes over the task of adapting the output voltage to the load (the loudspeaker). The signal transistor responsible for the sound is freed from driving the load to avoid distortions at the beginning. LEF makes it possible to use single-ended mode for high power, a mode that exceeds the classic Class-A by its natural lack of distortion.

    Overall Negative Feedback is Obsolete

    The B.M.C. amplifier’s natural lack of distortion facilitates the intended renunciation of tonally suspect overall negative feedback.
    The Current Injection input and Discrete Intelligent Gain Management would not be possible without the distortion-free LEF output stage and the absent negative feedback loop it induces.

    Stabilized 2kW Power Supply

    The power supply has nothing to do with the actual amplifier circuit, but determines the extent to which the potential of the amplifier really comes into effect.
    A 2kW toroidal core transformer forms the solid basis for a very powerful, dynamic, and stable source of energy.
    The storage in a whole battery of specially designed and produced Balanced Current capacitors is the basis for an exceptional musical evolvement and transparency.
    An innovative electronic stabilization circuit especially for the power section filters mains voltage ripples and other disturbances out of the supply voltage, ensuring exceptional tranquility and dynamic stability.

    All About the Music

    The consequences of designing an amplifier for consistent, exceptional musical reproduction also lead to test results right out of the textbooks. But the essential thing is the musical experience. The expression “neutral amplifier” makes one think of an amplifier without a character of its own. But it’s this lack of characteristics that makes describing the B.M.C. amplifier so difficult, since it can sometimes be brutally dynamic, sometimes highly expressive and full of detail, sometimes raw and discordant, sometimes bewitching and seductively beautiful, detailed and enveloped by its spatial presentation.
    In the end, the result is a musical transparency that has never before been heard.

    “More of the music and less of everything else.”
    – Mark Mickelson, Editor, The Audio Beat –

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Dimensions 5708473 cm