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PYE HF25 & HF25A Pre / Power Combination PYE HF25 (2) Monoblocks (Excellent condition) Monoblocks HF25 Specifications Serial Numbers: F177033 & F177071 Power output: 25 watts into 8Ω (mono) Frequency response: 2Hz to 160kHz Total harmonic distortion: 0.3% Damping factor: 35 Input sensitivity: 0.5V Signal to noise ratio: 90dB Speaker load impedance: 3.75Ω to 60Ω Valve complement: 2 x KT66, 1 x ECC33, 1 x ECC35, 1 x GZ32 Dimensions: 345 x 254 x 177mm Weight: 12.25kg Monoblocks are in very good condition having been serviced June 2023. Cosmetically excellent for age, the chassis are still very bl
At A$5,000, this asking price is ambitious for a used Pye HF25, sitting well above the typical global range of A$2,700–A$3,400 derived from recent listings of A$2,000 and £1,791. Even accounting for the “excellent” condition and Australian rarity noted in local classifieds, the price exceeds the 75th percentile unless the pair includes verified original KT66s, a manual, and a full restoration history.
The HF25 is worthy of interest for its dual KT66 topology, delivering what veterans call the “sweetest sounding” KT66 bass of the 1954 era. Its 25–30W output offers musical weight and clarity that still commands respect in high-end vintage circles. If this listing is a matched pair in original-owner condition with included accessories, the scarcity and sonic pedigree justify a fair negotiation, but at A$5,000 alone, it’s a stretch unless the seller proves top-tier provenance and valve integrity.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Pye is a historic British audio brand founded in 1896 in Cambridge, England, by William George Pye, a former Cavendish Laboratory workshop superintendent. The company quickly grew into a major industrial force, eventually comprising over twenty distinct entities that spanned telecommunications, broadcasting, and consumer electronics. While its early legacy is rooted in radar and radio communications, Pye's transition into high-fidelity audio during the mid-20th century established a lasting heritage that bridges vintage engineering with modern studio technology.
The brand is primarily known for its professional studio equipment, including high-quality audio amplifiers, pre-amplifier modules, mixing and switching units, and compression amplifiers. Pye TVT, established in 1960, became a pivotal name in studio recording and broadcast transmission, producing state-of-the-art gear used in seminal recordings from the late 1960s through the mid-1970s. Unlike brands focused on consumer turntables or headphones, Pye's core identity remains anchored in robust, analog signal processing and studio-grade amplification designed for professional environments.
In the current market, Pye occupies a unique position as a revered vintage-collector brand and a niche boutique entity for professional audio enthusiasts. Its reputation is defined by high-end, analog purity rather than mass-market mid-tier availability. Following a period of dormancy after the studio division closed in 1986, the brand was revived in 2020 by Avedis Audio in the United States, securing rights to restore and expand its legacy. Today, Pye is regarded by knowledgeable buyers as a symbol of classic British engineering excellence, appealing to those who value historical significance and uncompromising analog performance.
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