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Kinergetic KBA 75 Power Amplifier 75W Class A Excellent and boxed and working perfectly. Kinergetic KBA75 power amp class A 75 watts Kinergetics KBA 75 Class A" Power Amplifier with Two Kinergetics Woofers 23 Pure Class “A” power amplifier Power output: 75 watts per channel into 8 Ohm (stereo) Frequency response: 1 Hz to 300 kHz Total harmonic distortation: 0.02% Gain: 20 dB Speaker load impedance: 2 Ohm (minimum) .
At £800, this asking price is ambitious, sitting well above the median of £299 and the 75th percentile of £447 for recent GBP listings, making it a tough sell unless the condition is exceptional or includes rare upgrades like the Platinum restoration noted in similar units. The listing’s “good” condition note implies typical wear, which doesn’t justify a price nearly double the 75th percentile; you’d need to see original-owner provenance, full servicing records, or included accessories to make this a fair buy.
The Kinergetics KBA-75 is a revered 75W pure Class-A amp known for its unconditionally stable drive down to 2 Ohms and muscular output that feels far more powerful than its rating. Enthusiasts praise its ability to control difficult loads like Magneplanars with authority and transparency. If this unit has been professionally calibrated (a known service item for this model) and retains its heavy 1 KVA transformer and 22 output transistors intact, it remains a compelling sonic beast—but only at a price closer to £300–£450.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
# Kinergetics
Kinergetics Research emerged in the early 1970s from a group originally formed to undertake engineering development work for aerospace and undersea exploration. The company pivoted toward high-end audio during the nascent CD era, establishing itself as a respected designer and manufacturer of audiophile-grade electronics. Under the leadership of chief designer Tony DiChiro, Kinergetics became known for thoughtful, technically accomplished product design that prioritized sonic performance.
The brand built its reputation primarily through digital playback components, producing some of the earliest well-regarded audiophile CD players in the 1980s and early 1990s. As the market evolved, Kinergetics expanded its portfolio to include power amplifiers, preamplifiers, subwoofers, and surround-sound processors. Their amplifiers, notably the class-A designed KBA series, earned respect among discerning listeners for their refined approach to amplification. The company eventually ceased manufacturing CD players to focus on other product categories.
Kinergetics occupied a distinctly high-end, boutique position within the audio market—a niche brand favored by enthusiasts who valued engineering rigor and sonic integrity over mass-market appeal. The company is no longer active, having folded in the early 1990s, though its vintage equipment remains sought after by collectors and audiophiles who recognize the quality of its design legacy. Original Kinergetics components command respect in the used market as examples of thoughtful, well-engineered high-end audio.
See all Kinergetics listings on RADAR.
