QUAD 3 Integrated Amplifier

Why Choose the QUAD 3 Integrated Amplifier

The QUAD 3 Integrated Amplifier is a single-chassis amplification and source-switching hub aimed at buyers who own both a turntable and a range of digital sources and want one unit to run them all, rather than a stack of separate boxes. It takes its styling from the QUAD 22 pre-amplifier, sits alongside the current QUAD 33 and 303 in QUAD's range, and shares the orange-lit LCD strip introduced on the QUAD 33, so anyone already familiar with that range will recognise the same source-selection and Tilt-control workflow here. A row of digital encoders handles volume, source selection, balance, bass and Tilt, and the LCD backlight brightness can be adjusted or switched off, which lets the fascia sit quietly in a darkened room rather than staying lit at full brightness.

What does the QUAD 3 Integrated Amplifier offer that a standard integrated amplifier doesn't?

The QUAD 3 Integrated Amplifier is built around a full MM phono stage, an ESS9038Q2M DAC, Bluetooth 5.1 with aptX HD, an HDMI ARC input and a dedicated current-feedback headphone amplifier, all housed in one chassis alongside QUAD's own Bass and Tilt tone-shaping controls. Bringing a turntable input, a set of digital inputs and a separate headphone circuit together in a single integrated amplifier means a buyer isn't forced to add an outboard phono preamp or a standalone DAC to complete the system.

Which sources and audio formats will it handle?

The QUAD 3 is compatible with hi-res PCM audio up to 768kHz and DSD up to DSD512 over its USB-B input, for a PC or Mac connected directly to the amplifier. Coaxial and optical S/PDIF inputs handle hi-res audio up to 192kHz, suiting CD players, network streamers and other digital sources that don't need a USB connection. The HDMI ARC input carries audio from a television, and Bluetooth 5.1 with aptX HD streams 24-bit hi-res audio from a phone, tablet or laptop. Two line-level RCA inputs cover further analogue sources, and the built-in MM phono stage gives a turntable fitted with a moving-magnet cartridge low-noise gain and RIAA equalisation without needing a separate phono preamp.

How does the QUAD 3 fit into an existing hi-fi or AV setup?

The QUAD 3 is 300mm wide, 101mm high and 332mm deep, which suits a standard equipment shelf or AV rack alongside a turntable, streamer or CD transport. Its outputs include a pre-amplifier out, a stereo speaker output, a headphone output and a 12V trigger, so it can drive a pair of passive loudspeakers directly or feed a separate power amplifier through the pre-out where a buyer wants to add one later. Firmware updates load over USB, which lets an owner keep the DAC and Bluetooth implementation current without returning the unit to a dealer. Connecting the HDMI ARC input to a television also lets the TV's own remote control the amplifier's volume and power, removing the need to switch remotes when moving between TV sound and music sources.

Who does this amplifier suit?

The QUAD 3 is suited to a vinyl listener who also wants digital sources covered from the same box, and to an owner who wants headphone listening handled by a dedicated circuit rather than a shared output stage. Standby power consumption stays under 0.5W, which keeps running costs low for a unit left connected to a system rather than switched off at the wall.

What do the Bass and Tilt controls actually change?

The QUAD 3's Bass control is adjustable by up to 3dB in either direction, adding or reducing low-frequency output to compensate for a room or a pair of speakers with a lean or heavy bottom end. The Tilt control works differently: it moves both ends of the frequency spectrum together, in 1dB steps, pivoting around a 700Hz axis, so that lifting the treble simultaneously lowers the bass, or lifting the bass simultaneously lowers the treble. This gives a buyer a single control for shifting the overall tonal balance warmer or cooler to suit a particular recording or room, rather than needing separate bass and treble adjustments to achieve the same shift. Both controls, along with volume and source selection, are also accessible from the supplied full-function remote control.

What's built into the power supply and amplification stage?

The QUAD 3's Class AB power amplifier stage is fed by a 235VA toroidal transformer and a 30,000uF reservoir capacitor, which supply the current reserve needed for sudden dynamic peaks without the amplifier running out of headroom. Rated output is 65W per channel into 8 ohms, rising to 100W per channel into 4 ohms, giving the QUAD 3 enough current delivery to drive a typical pair of stand-mount or floor-standing speakers without strain. On the digital side, the ESS9038Q2M DAC chipset is paired with a Class A post-DAC filter circuit, and incoming SPDIF or USB audio is upsampled to either 352.8kHz or 384kHz before conversion, which keeps the filtering stage working within its optimal range regardless of the source file's original sample rate. The headphone output runs from its own current-feedback amplifier circuit rather than being tapped from the main speaker output stage, so headphone listening isn't affected by the loudspeaker load or cable length in the same way it would be on an amplifier without a dedicated headphone circuit.

Where does the QUAD 3 sit against other amplifiers on the market?

The QUAD 3 is positioned within QUAD's current range alongside the QUAD 33 and QUAD 303, sharing their industrial design cues, including the orange-lit LCD strip introduced on the QUAD 33, and drawing its overall aesthetic from the earlier QUAD 22 pre-amplifier. It's also shown alongside the QUAD 3CDT as a related product within the same QUAD family. For a buyer choosing within QUAD's own lineup, the QUAD 3's distinguishing point is that it brings phono, digital and Bluetooth inputs together in a single integrated amplifier, rather than requiring separate boxes for source conversion and amplification.