QUAD 3 Stereo Integrated Amplifier – Classic British Hi-Fi Meets Modern Performance
The QUAD 3 Stereo Integrated Amplifier is a masterful blend of classic British hi-fi design and advanced digital audio engineering. Designed for music lovers who value both heritage and innovation, this integrated amplifier delivers exceptional sound quality, versatile connectivity, and intuitive control in a compact, elegant chassis. Whether you are rediscovering your vinyl collection, streaming high-resolution music, or enhancing your TV audio, the QUAD 3 is built to be the heart of a modern stereo system.
Drawing inspiration from the legendary QUAD 22 pre-amplifier while embracing the aesthetics of the latest QUAD 33 and 303, the QUAD 3 brings timeless design into today’s listening spaces. Its refined proportions, vintage-inspired details, and modern display make it equally at home in traditional hi-fi racks and contemporary living rooms.

Classic Elegance with a Contemporary Twist
The design of the QUAD 3 Stereo Integrated Amplifier pays homage to decades of iconic QUAD engineering. A signature orange-lit LCD display strip provides clear visual feedback for volume, input selection, and system settings. Users can adjust the brightness or switch it off completely, allowing the amplifier to blend seamlessly into any environment.
A row of precision digital encoders on the front panel offers tactile control over volume, balance, bass, source selection, and the renowned QUAD Tilt control. These controls are engineered to fine-tune the sound without adding unwanted colouration, preserving the natural character of the music while adapting it to your room and personal taste.
Versatile Connectivity for Every Music Source

The QUAD 3 is designed as a true all-in-one stereo integrated amplifier, offering comprehensive analogue and digital connectivity for today’s audiophile.
Digital Inputs for High-Resolution Audio
- USB-B input supporting up to 768kHz PCM and DSD512 for PC and Mac playback
- Optical and coaxial S/PDIF inputs supporting up to 192kHz for CD players, streamers, and digital transports
- HDMI ARC input for easy TV integration with volume and power control via your television remote
Wireless Streaming
- Bluetooth 5.1 with aptX HD support for high-quality wireless audio from smartphones, tablets, and laptops
Analogue and Vinyl Support
- High-quality MM phono stage with accurate RIAA equalisation for turntables
- Two line-level RCA inputs for analogue sources such as CD players and tuners
This wide range of inputs makes the QUAD 3 Stereo Integrated Amplifier a flexible hub for both traditional and modern music systems.
High-Resolution USB Audio from Your Computer

For listeners who use a computer as their primary music source, the QUAD 3 offers a dedicated USB audio input capable of handling extremely high-resolution files. Supporting up to 768kHz PCM and DSD512, this connection allows you to experience studio-quality audio directly from your PC or laptop.
With simple plug-and-play functionality, the amplifier transforms your computer into a high-end digital source. Streaming platforms, local music libraries, and advanced playback software all benefit from the QUAD 3’s refined digital processing and exceptional clarity.
Advanced Digital Architecture and DAC Performance
At the core of the QUAD 3’s digital performance is the highly regarded ESS9038Q2M DAC chipset. This advanced digital-to-analogue converter is carefully implemented with a Class A post-DAC filter stage, ensuring low noise, excellent resolution, and natural musical detail.
Upsampling can be applied to audio from both USB and S/PDIF sources, with selectable options of 352.8kHz or 384kHz. This enhances timing accuracy and smoothness, delivering a more refined and immersive listening experience.
The QUAD 3 is also a full MQA decoder, capable of unfolding and rendering MQA files to reproduce the original studio master sound. Five user-selectable digital filters allow further tuning of the sound character, ensuring optimal playback across different formats and sources.
Powerful Class AB Amplification

Despite its compact size, the QUAD 3 Stereo Integrated Amplifier delivers impressive power and control. The Class AB amplifier stage is supported by a custom-engineered power supply featuring a robust 235VA toroidal transformer and a substantial 30,000uF reservoir capacitance.
With 65 watts per channel into 8 ohms and up to 100 watts per channel into 4 ohms, the QUAD 3 can confidently drive a wide range of loudspeakers. The result is a sound that is dynamic, controlled, and true to QUAD’s long-standing reputation for musical accuracy.
Dedicated Headphone Amplifier
Headphone listeners are equally well served. The QUAD 3 includes a dedicated current-feedback headphone amplifier designed to mirror the precision and low distortion of the main amplifier stage. This ensures clean transients, excellent detail, and engaging sound when listening through headphones.
Signature QUAD Sound Controls

One of the defining features of the QUAD 3 is its thoughtful approach to tone adjustment. The bass control offers ±3dB adjustment to tailor low-frequency response to your room or speakers. The iconic QUAD Tilt control adjusts both bass and treble simultaneously around a 700Hz axis, allowing the sound to be subtly warmed or cooled without altering overall balance.
This intelligent approach to sound shaping helps preserve musical integrity while offering genuine flexibility.
Effortless Control with the Full-Function Remote

The supplied remote control provides complete access to all amplifier functions, including volume, input selection, bass, balance, Tilt control, and menu navigation. Designed for intuitive use, it allows you to fine-tune your system from the comfort of your listening position, enhancing everyday convenience.
A Modern Integrated Amplifier with Timeless Appeal
The QUAD 3 Stereo Integrated Amplifier stands as a benchmark for style, performance, and value. Combining classic British hi-fi design with modern digital technology, it caters to vinyl lovers, digital audio enthusiasts, TV-centric systems, and headphone users alike.
If you are looking for an integrated amplifier that delivers exceptional sound quality, comprehensive connectivity, and enduring design, the QUAD 3 is a compelling choice. Experience the heritage of QUAD, reimagined for today’s music lovers, and take your listening experience to the next level.
| QUAD 3 Stereo Integrated Amplifier – Specifications | |
|---|---|
| Model | QUAD 3 |
| General Description | 2 x 65W (8 ohm), 2 x 100W (4 ohm) Class AB power amplifier section ES9038Q2M 32-bit DAC |
| Design Philosophy & Core Technology | MQA Full Decoder (PC USB, Coax/Optical) Bluetooth 5.1 streaming (aptX / aptX HD) Dedicated high performance low-noise MM phono stage Dedicated current-feedback headphone amplifier Built-in bass and Tilt adjustment USB firmware upgrade |
| Analogue Inputs | 2 x Auxiliary (Line), 1 x Phono (MM) |
| Digital Inputs | 1 x SPDIF (Coaxial) 1 x SPDIF (Optical) 1 x PC USB 1 x HDMI ARC 1 x Bluetooth (aptX / aptX HD) |
| Control / Trigger | 1 x 12V Trigger In / Out |
| Outputs | 1 x Pre-amplifier output 1 x Stereo speaker output 1 x Headphone output 1 x 12V Trigger output |
| Sampling Frequency | Optical / Coaxial: 44.1kHz – 192kHz PC USB: 44.1kHz – 768kHz (PCM), DSD64 / DSD128 / DSD256 / DSD512 |
| Preamplifier Section | |
| Gain (Max.) | +0dB (Line) +47dB (Phono MM) |
| Input Sensitivity | 800mVrms (Line, Volume = 0dB) 3.6mV (Phono MM, Volume = 0dB) |
| Input Impedance | 10KΩ (Line) 47KΩ / 100pF (Phono MM) |
| Total Harmonic Distortion (THD) | < 0.001% (1kHz @ 2V, Volume = 0dB) |
| Frequency Response | 20Hz – 20kHz (±0.1dB) |
| Output Voltage | 2.3V max. (Volume = 0dB) |
| Output Impedance | 120Ω |
| Signal-to-Noise Ratio | > 110dB (Line, A-weighted) > 78dB (Phono MM, A-weighted) |
| DAC Section | |
| D/A Converter | ES9038Q2M |
| Total Harmonic Distortion (THD) | < 0.001% (1kHz @ 0dBFS) |
| Output Level (0dBFS, 1kHz) | 2.05Vrms |
| Maximum Sampling Frequency | Optical / Coaxial: 192kHz PC USB: PCM 768kHz, DSD512 |
| Signal-to-Noise Ratio | > 116dB (A-weighted) |
| Power Amplifier Section | |
| Gain | +29dB |
| Rated Power Output | 2 x 65W (8 ohm, THD < 1%) 2 x 100W (4 ohm, THD < 1%) |
| Frequency Response | 20Hz – 20kHz (±0.3dB) |
| Total Harmonic Distortion (THD) | < 0.003% (1kHz @ 30W / 8 ohm) |
| Input Sensitivity | 800mVrms |
| Signal-to-Noise Ratio | > 110dB (A-weighted) |
| Maximum Output Current | 10A |


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