SUGDEN A21 SE

Pre owned, in excellent condition. Free from visible signs of wear. Supplied with remote control and original packaging.

The Sugden A21 SE is an integrated amplifier that embodies the pure spirit of Class A in solid-state hi-fi, maintaining an essential and refined approach. It is designed to deliver a “typically Sugden” sound: natural, fluid, and organic, reproducing music with great integrity and musicality. Its single-ended electronics (voltage rail) and upgraded power supply — significantly more robust than the original Sugden A21 — give the A21 SE superior dynamics and better control over a wide range of speakers. The result is a rich midrange, detailed and pleasant highs — without harshness or artificial emphasis — and a three-dimensional soundstage where instruments and voices are positioned with clarity and naturalness.

At lower volumes, micro-details and harmonic richness emerge convincingly: pianos, strings, and acoustic instruments convey body and color, sounding warm and realistic. At the same time, the amplifier maintains tonal balance, avoiding any dulling or weakening of the low frequencies. It is not designed to drive large speakers at party-level volumes, but excels at creating an intimate and engaging atmosphere — ideal for attentive, relaxed, and musical listening.

From a technical perspective, the A21 SE offers five line-level inputs selectable via relays, a variable pre-out, tape-out, and multi-way stereo speaker terminals. Rated output: 30 W per channel into 8 Ω (40 W into 4 Ω), frequency response 12 Hz–141 kHz, extended bandwidth up to 280 kHz, signal-to-noise ratio above 90 dB. The chassis is carefully built, robust, and finely finished, reflecting Sugden Audio’s British craftsmanship tradition.

In summary, the A21 SE is an integrated amplifier that does not aim to impress with numbers or “muscle,” but focuses on delivering music with naturalness, harmony, depth, and musicality: an ideal companion for those who value refined, engaging, and effortless listening with suitable speakers. For those prioritizing timbral quality, detail, and faithful reproduction, few solid-state amplifiers can match its elegance and sonic coherence.

Technical specifications:

• Inputs: five line-level inputs selectable via relays
• Outputs: variable pre-out, fixed tape-out, multi-way stereo speaker terminals
• Line input sensitivity: 110 mV (for maximum output at zero volume)
• Output power: 30 W per channel into 8 Ω; 40 W per channel into 4 Ω, both channels driven
• Frequency response: 12 Hz to 141 kHz (± 1 dB)
• Extended bandwidth: 6 Hz to 280 kHz
• Signal-to-noise ratio: > 90 dB
• Total harmonic distortion (THD): < 0.006 % @ 1 kHz, 1 V output
• Net weight: approximately 14 kg
• Dimensions (H × W × D): 115 × 430 × 360 mm