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• Overview – The Copland CTA505 Power Amplifier is a Class A/B valve stereo power amplifier from Danish manufacturer Copland, launched in 1995 with switchable tetrode and triode operating modes for different sonic characters.
• Key Technology – Four 6550A output valves are driven by a voltage amplification and phase inversion stage using 12AX7A, 12AU7, and 12AT7 tubes, with 16dB of negative feedback and output transformer taps for 4Ω or 8Ω speakers.
• Performance – Switching between tetrode and triode operation lets listeners choose between higher output power or greater sonic purity, giving useful flexibility to match different loudspeakers or listening preferences without changing amplifiers entirely.
• Specs – The Copland CTA505 Power Amplifier delivers 67W+67W in tetrode (pentode) mode, or 35W+35W in triode mode. THD: below 0.02% (1kHz/1W), below 0.8% (1kHz/60W). Frequency response: 5Hz–80kHz ±3dB. Output bandwidth: 8Hz–45kHz (-3dB). Signal-to-noise ratio: 102dB (IHF, input shorted). Input sensitivity: 1.5V. Input impedance: 250kΩ. Negative feedback: 16dB. Power consumption: 185W.
• Dimensions – Measures approximately 430mm (W) × 175mm (H) × 375mm (D), a substantial chassis typical of Copland’s fully valve-based power amplifiers of the era.
• Weight – Weighs approximately 25kg, reflecting its output transformers and quartet of 6550A output valves.
This is a buyer’s market listing if the unit is genuinely clean: S$1,500 is fair to attractive for a Copland CTA 505 in very good condition, and it starts to look like a solid buy rather than a stretch. I can’t pin down a tight live Singapore median from the results, but comparable Copland power pieces in the local market have sat around S$1,400 for a CSA 515, which puts this asking price in reasonable territory for a well-kept 505 rather than an outlier.
The appeal here is straightforward: Copland’s valve power amps are valued for a smooth, open presentation with good drive and a refined, musical balance rather than brute-force punch. If the tubes are healthy and the unit has been serviced sensibly, the upside is a classy, higher-end European amp at a sensible entry point. I’d mainly confirm tube age, bias stability, and whether any original packaging or manual is included, since those details matter more than cosmetic grade at this price.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Copland, a Danish hi-fi brand rooted in central Copenhagen, was founded in the mid-1980s by Ole Møller, a veteran audio engineer whose career began at Ortofon developing low-noise amplifiers. Drawn to valve technology, Møller established the company to pursue his passion for innovative audio electronics, blending decades of expertise into designs that prioritize sonic purity. Production briefly shifted to Sweden in the 1990s under Xena Audio ownership to meet demand, but Copland returned to its Danish home, reclaiming its dedicated factory.
The brand focuses on a select range of premium components, renowned for class-leading integrated amplifiers and CD players that showcase Møller's mastery of valves and solid-state hybrids. Models like the CSA150 and CSA100 exemplify this dedication, delivering exceptional sound quality through smart engineering rather than expansive catalogs. Copland avoids speakers, turntables, DACs, headphones, or cables, concentrating instead on amplification excellence.
Positioned as a niche boutique in the high-end market, Copland commands a devoted global audiophile following and garners prestigious awards for its refined, award-winning products. It appeals to discerning buyers seeking understated elegance and superior performance over mass-market volume, standing alongside Scandinavian icons like Dynaudio and Primare in a legacy of precision craftsmanship.
See all Copland listings on RADAR.
