4040 A

Integrated Amplifier + DAC

“The 40th anniversary 4040 A integrated amplifier will suit the most demanding applications. Whether used in a domestic audio or desktop system, the feature-rich 4040 A is simple to use, yet luxurious in operation. Created to provide a totally immersive high-end experience”

“With five decades’ experience in the audio business, I have seen a lot of electronic developments in my time, but I am really excited about this major step forward in technology and musical performance”
Mike Creek – Creek Audio

The all-new 4040 A integrated amplifier has been designed to reprise the essence of the original CAS4040 which was launched in 1982 to critical acclaim. While huge technological advances and modern digital features have propelled the 4040 A into the 21st century, it continues to release the same endorphins its ancestor did 40 years ago.


The 4040 A’s intuitive user interface and sophisticated menu system are easily navigated by two rotary control knobs or infra-red remote control


The “feature-rich” 4040 A contains three analogue signal inputs, including two pairs of unbalanced RCA sockets and one pair of fully balanced XLR sockets, that can still be used single-ended. An electronic volume and balance control enables precise 1dB adjustments over a 70dB range. Tone controls (EQ) enable +/- 10dBs adjustment of treble and bass.


Vinyl music lovers may plug-in an optional Sequel mk4 Phono pre-amp in place of Line 2 to match a wide range of Moving Magnet and high output Moving Coil cartridges found on modern turntables.


A high current, low distortion headphone amplifier drives a wide range of low-impedance headphones via a front panel-mounted 6.35mm (1/4”) jack socket.


Coaxial SPDIF, optical TOSLINK, USB class 2 and aptX Bluetooth 5.0 enables digital sources, such as music streamers, TVs, CD transports, computers, and wireless Bluetooth devices to be connected.


PCM and DSD digital audio signals are converted to analogue with a reference quality 32-bit ES9018k2m Sabre32 DAC.


The 4040 A employs cutting-edge MERUS™ Infineon technology enabling it to drive even the most difficult loads to realistic listening levels with high fidelity. The power amp may be driven directly via Line 1.


The key to the integrated amplifier’s impressive performance is in its high-frequency power supply, optimised for audio electronics, enabling the latent quality of its amplifier to be realised. The performance is unaffected by mains quality or voltage stability. Unlike most conventional amplifiers, the 4040 A’s 350-Watt power supply is voltage stabilised, enabling it to double its power output into half the load impedance, regardless of the mains voltage.


Power consumption is reduced by powering-down non-essential circuitry when not required.


Technical Specifications

Power output: 55 W into 8 Ohms, 110 W into 4 Ohms, both channels driven

Continuous max output current: >8A, current limited

Peak current: >20A

THD and Noise: <0.045%

Signal to Noise Ratio: 105dBA

Frequency Response: 5Hz to 50 kHz, +/-3dB / 10Hz – 20KHz +/-1dB

Input sensitivity: 525mV for 55 W into 8 Ohms

Gain: 32dB or x40

Crosstalk: >68dB at 1 kHz

Pre-Amp Inputs: 2x RCA (unbalanced) and 1x XLR (balanced)

Power-Amp Input: Power Amp Direct via a menu option

Plug-in Phono options: Sequel mk4 MM Phono. 40 and 50dB gain

Digital inputs: 1x co-axial, 1x optical, 1x USB 2.0

Wireless: Bluetooth aptX HD

Digital to Analogue Converter: ES9018k2m Sabre DAC.

Loudspeaker Outputs: 4mm binding posts with rear and side entry, plus a spade lug

Speaker output impedance: <0.02 Ohms 20Hz to 20 kHz.

Damping Factor: >100 into <0.04 Ohms

Headphone Output socket: 6.3mm stereo jack socket for 30 – 300 Ohm headphones

Mains input voltage range: 100V to 240V nominal, 50Hz or 60Hz

Power Consumption: <0.5W Standby, 5W Idle, 350W Full Power

Auto Standby: 30, 60, 120 minutes, or disabled

Finish colours: Silver or Black front panel

Weight: 2.2kgs (4.85 lbs) net, 3kgs (6.6 lbs) gross (packed)

Size W/H/D: 21.5 x 6 x 25.5 cm (8.46″ x 2.36″ x 10”)

including feet, knobs, LS terminals and BT antenna.