Quad 303 Power Amplifier 2024

QUAD 303 Power Amplifier (2025 Version)

The new QUAD 303 Power Amplifier is a complete re-engineering of one of hi-fi’s most iconic designs. Originally celebrated for its reliability in both domestic and professional environments, the 303 returns with modern performance, improved power delivery, and refined circuitry—while staying true to the philosophy that made it legendary.

This latest iteration goes far beyond a simple component refresh. Retaining QUAD’s famous “symmetrical triples” output stage, the new 303 delivers vanishingly low distortion and exceptional stability, even under demanding conditions. With a fully complementary output stage and upgraded internal architecture, it offers greater linearity, improved reliability, and enhanced sonic performance.

Combining heritage design with modern engineering, the QUAD 303 delivers a powerful, controlled, and musically engaging sound that honours its legacy while meeting today’s expectations.

Key Features:

• Re-engineered version of the iconic QUAD 303 amplifier
• QUAD “symmetrical triples” output stage for ultra-low distortion
• Fully complementary output stage for improved linearity and stability
• Custom low-noise 200VA toroidal transformer
• Advanced feedback topology for thermal stability and dynamic performance
• Stereo and bridged mode operation
• High current capability for demanding speaker loads
• Classic QUAD industrial design with modern build quality

Connections:

• Inputs: 1 x RCA (line), 1 x XLR (balanced)
• Outputs: Speaker terminals (stereo), 12V trigger, 12V trigger link

Technical Specifications:

• Amplifier type: Class AB power amplifier
• Power output (Stereo): 2 x 50W (8Ω), 2 x 70W (4Ω)
• Power output (Bridged): 140W (8Ω), 170W (4Ω)
• Gain: +29dB
• Frequency response: 20Hz – 20kHz (±0.3dB)
• Total harmonic distortion: <0.002% (1kHz)
• Signal-to-noise ratio: >108dB (A-weighted)
• Input impedance: 10kΩ
• Input sensitivity: 700mV (RCA), 1.5V (XLR)
• Maximum output current: 10A
• Standby power consumption: <0.5W
• Dimensions: 325 x 176 x 120 mm (W x H x D)
• Weight: 8.4 kg

Finish:

• Classic QUAD Grey

What’s Included:

• QUAD 303 Power Amplifier
• Power cable
• Remote control
• User manual
• Manufacturer packaging

Note: This product is available for in-store purchase and demonstration only. Visit the Spinning Room showroom in Leeds to experience the new QUAD 303 in person.