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AmplifiersIntegrated AmplifiersDiscontinued
Estimated price (community-sourced)
$2,732
Around — community and catalog average, updates slowly
About the A21
The Sugden A21 is a stereo integrated amplifier built around the company’s pure Class A, single-ended voltage-rail circuit. The current A21 Signature version is offered with or without an MM/MC phono input; the line-only version is designated A21L. Manufacturer specifications list five line-level inputs (four on the integrated version), a variable pre-out, a fixed tape output, and stereo speaker binding posts.
Specifications
Type: Stereo integrated amplifier; topology: pure Class A, single-ended voltage rail; power output: 25 W per channel into 8 Ω; frequency response: ±1 dB, 10 Hz–20 kHz; bandwidth: 6 Hz–200 kHz; line input sensitivity: 170 mV for maximum output; optional phono sensitivity: 3 mV MM / 0.2 mV MC for maximum output; phono input impedance: 47 kΩ MM / 470 Ω MC; signal-to-noise ratio: >83 dB; inputs: five line-level inputs (four on A21 Integrated), optional MM/MC phono; outputs: variable pre-out, fixed tape out, stereo speaker terminals; dimensions: 92 × 430 × 355 mm (H × W × D); packed weight: 11 kg.