Quad

Iconic British Engineering The QUAD 303 is a legendary Class AB power amplifier that has stood the test of time, renowned for its transparent, musical sound and robust build quality. Originally introduced in the 1960s, it has been meticulously re-engineered to meet modern audiophile standards while preserving its classic charm.Advanced Output Stage Featuring QUAD’s signature "Triples" output stage, the 303 employs a fully complementary design that ensures low distortion and high linearity. This innovative approach delivers a clean, precise, and musically warm reproduction, impressing at both low and high volumes.Flexible Power Options The amplifier offers versatile power configurations: 50W per channel into 8Ω, 70W per channel into 4Ω, and 140W in bridged mode into 8Ω. This flexibility allows it to drive a wide range of loudspeakers with ease, including QUAD’s electrostatic designs.Modern Enhancements The reissued QUAD 303 incorporates a custom 200VA toroidal transformer, upgraded circuitry, and improved thermal management. These enhancements ensure greater reliability, reduced heat generation, and compatibility with contemporary audio systems.Classic Aesthetic Retaining its iconic anodized chassis and CNC-routed heat sinks, the QUAD 303 exudes a timeless design that remains relevant in today's hi-fi landscape. Its understated elegance complements any audio setup, from vintage to modern.Key FeaturesPower Output: 50W per channel (8Ω), 70W per channel (4Ω), 140W bridged (8Ω)Output Stage: Fully complementary "Triples" design for low distortion and high linearityTransformer: Custom 200VA toroidal transformer for improved performanceInputs: 1 x Line, 1 x XLR for versatile connectivityOutputs: 1 x Stereo Speaker, 1 x 12V Trigger, 1 x 12V Trigger (Link)Frequency Response: 20Hz – 20kHz (+/-0.3dB)Total Harmonic Distortion (THD): 108dB (A-weighted)Maximum Output Current: 10A for driving demanding loadsDesign: Anodized chassis with CNC-routed heat sinks for durability and aesthetics

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 FeaturesFully transistorized integrated amplifier with classic QUAD engineeringOutput power: 20–25 W per channel into 8 ΩTotal harmonic distortion (THD): typically 80 dBInputs: multiple line inputs, tape monitor, tuner, auxiliaryLoudness control for enhanced low-frequency response at low volumesCompact design with high-quality build and durable componentsTransparent, neutral, and highly musical sound signatureEasy-to-use front panel with intuitive controls