Quad 33

Legendary British Design

The QUAD 33 is a fully transistorized integrated amplifier that has become a benchmark in hi-fi since its introduction. Known for its clean, neutral, and highly musical sound, it offers warmth and detail in equal measure, making it ideal for both new listeners and seasoned audiophiles.

Transparent Sound with Minimal Distortion

Engineered for clarity, the QUAD 33 emphasizes low distortion and faithful reproduction of the source material. Its simple yet effective topology ensures a wide, open soundstage with precise imaging and natural tonal balance.

Flexible and User-Friendly

With multiple line inputs, tape monitoring, and adjustable loudness control, the QUAD 33 provides flexibility for a variety of audio sources. Its ergonomically designed front panel makes operation intuitive, while robust construction ensures decades of reliable use.

Compact Yet Powerful

Despite its modest size, the QUAD 33 delivers up to 20–25 W per channel into 8 Ω, enough to drive most bookshelf and small floorstanding speakers with authority and finesse. Its low-noise circuitry preserves delicate details in every recording.

Key Features

• Fully transistorized integrated amplifier with classic QUAD engineering
• Output power: 20–25 W per channel into 8 Ω
• Total harmonic distortion (THD): typically <0.1%
• Frequency response: 20 Hz – 20 kHz ±1 dB
• Signal-to-noise ratio: >80 dB
• Inputs: multiple line inputs, tape monitor, tuner, auxiliary
• Loudness control for enhanced low-frequency response at low volumes
• Compact design with high-quality build and durable components
• Transparent, neutral, and highly musical sound signature
• Easy-to-use front panel with intuitive controls