The MaiA S3 is the all-in-one solution for your hi-fi system. Not only has the circuit design been reworked, but the enclosure has been enlarged as well. The larger footprint allows for an improved circuitry layout in terms of electromagnetic interference. With 8 total inputs, MaiA S3 is ready for any combination of sources.

Sources Galore

MaiA S3 offers a phono RCA input for MM, MI or high-output MC cartridges as well as three RCA line-level inputs for sources such as CD players. You can also connect digital sources such as your TV and/or a CD transport via the digital coax or optical S/PDIF inputs to recruit MaiA S3’s DAC with a quality up to 24bit/192kHz. If you want to stream your music from your mobile phone, tablet or pc you can simply connect to the high definition AptX HD-capable Bluetooth 5.0 input and achieve quality up to 24bit/48kHz (better than standard CD quality).

Listen How You Like

MaiA S3 also provides versatile output options. It’s headphone-ready for private listening, or connect your speakers via the 4mm banana plugs and the low-noise amplifier will provide musical sound with lifelike characteristics. The variable RCA output also allows you to use a subwoofer or a second power amplifier in your system.

This integrated amplifier accommodates all your sources and delivers music in outstanding quality. With the supplied remote control you can adjust the volume with the motor-driven analog potentiometer as well as toggle among inputs. MaiA S3 is designed and assembled in Europe (available in black or silver!).

Additional information
Weight 1.07 kg
Dimensions 17.6 × 20.6 × 5.5 cm



  • Premium S3 aluminum enclosure
  • Bluetooth 5.0 – aptX HD-capable (24bit/48kHz)
  • 2 x 40W @ 4 ohms
  • Dual-mono design principle
  • 8 inputs (5x analog, 3x digital & 1x wireless BT)
  • Cirrus Logic CS4344 24bit/192kHz multi-bit Delta Sigma DAC chip
  • S/PDIF inputs support up to 24bit/192kHz
  • Phono input for MM, MI & high-output MC cartridges
  • Analog volume control with motor-driven potentiometer
  • 6.3mm (1/4″) headphone jack
  • Variable output for subwoofer or second zone amp
  • Remote control included
  • Rigid aluminum chassis protects circuitry from RF/EMI
  • Available in silver or black
  • Made in Europe


  • Power output: 2x 23W/40W at 8/4ohms (1% THD)
  • Frequency response (20Hz – 20kHz): <-0.5dB @4ohm
  • Channel separation: -69dB at 10kHz
  • Signal-to-noise ratio: 97dB (101dB, ‘A’ weighted) @4ohm
  • THD: <0.04% at 10W/4 ohms
  • Headphone amplifier: 2x 75mW at 32ohm (1% THD)
  • Headphone output: 6.3mm (1/4″) jack (16-600ohms)
  • Analog inputs: 3x pair line-level RCA, 1x phono MM (RCA)
  • Digital inputs: RCA digital coax, 2x Toslink, Bluetooth 5.0 (aptX)
  • DAC chip: Cirrus Logic CS4344 (24bit/192kHz)
  • Variable output: 1x pair RCA
  • Speaker connectors: 4mm Ø banana plugs, spades or bare wire
  • Power supply: 20V/3A DC; 100-240V, 50/60Hz
  • Standby power consumption: <0.5W
  • Dimensions (WxHxD): 206 x 55 x 153mm (176mm with sockets)
  • Remote control battery: 1x CR2032 or CR2025 (3V)
  • Weight: 1070g without power supply


“Sounding wholly convincing digging out an impressive amount of low end weight… The MaiA S3 works in details that other amplifiers miss producing something genuinely rousing.” – Hi-Fi Choice 5 Star Review & Group Test Winner

“No question about it; the Pro-Ject MaiA S3 is going to appeal to lots of people. Despite being tiny, it is hugely versatile, sounds excellent, runs cool, and sells for a very reasonable price. For those just wanting a good, small, simple, fuss-free amplifier, the MaiA S3 will be perfect; just the ticket.” – James Michael Hughes, Stereonet Applause Award

“At the core of any judgement of the Pro-Ject will be an argument over whether 23 watts is ‘enough.’ Based on every metric of testing equipment in a UK lounge I’ve accrued over the years, it is, but it seems that a few of you take comfort in bigger numbers. From my perspective, I’d rather have 23 good watts than 100 indifferent ones and the Maia S3 delivers a performance and flexibility across those connections that is hard to match at the price. Pro-Ject’s affordable integrated keeps getting better and the Maia S3 has to be seen as a Best Buy.” – Ed Selley, AV Forums Best Buy Award

“I was delighted with the little MaiA and what a great price! … It sounded brilliant. It had a punch although it’s a class D amplifier. I would never have guessed. I thought at least it’s an AB or an A. It’s got a lovely warm sound to it.” – Harley Lovegrove, Pearl Acoustics