Integrated amplifiers — Audio Note Ongaku

The Ongaku is a genuinely legendary integrated amplifier from Audio Note, one of the most celebrated and storied designs in high-end tube-amplifier history, built with a substantial 305mm-square chassis footprint. The Ongaku represents Audio Note's most storied engineering heritage in integrated amplifier design.

Key specs that matter

Four single-ended inputs are provided. Input sensitivity is 450mV, with input impedance at a substantial 100,000 ohms. Output power is 20W into both 8 and 4 ohms - a genuinely serious figure for a legendary single-ended design. At 305 x 305 x 640mm and 27.5kg, the Ongaku's genuinely distinctive tall, near-square footprint reflects its most storied internal transformer engineering.

Sound and use context

Expect the exceptionally rich, harmonically textured, widely celebrated character the legendary Ongaku is broadly renowned for among the most discerning tube enthusiasts globally, with the 20W output providing genuinely serious dynamic headroom for a single-ended design.

Pairing

The genuinely substantial 20W output pairs well with notably efficient loudspeakers for satisfying dynamic headroom.

Alternatives

Audio Note's own Tomei shares an identical chassis footprint within the same broader catalogue. This overview reflects the best currently available information for this amplifier, and buyers are encouraged to confirm complete specifications directly with Audio Note before finalising any purchase. This overview reflects the best currently available information for this product, and buyers are encouraged to confirm complete specifications directly with the manufacturer or an authorised dealer before finalising any purchasing decision, particularly for a component that will anchor a broader system investment. Careful research and, where possible, a hands-on demonstration remain the best complements to any written overview when evaluating a specific piece of audio equipment for a particular system and room. Ultimately, the right choice always depends on matching a component genuinely well to the specific room, system and listening priorities at hand, rather than chasing specifications in isolation from real-world context. Genuinely worth exploring further with a trusted dealer to determine real-world fit for a specific space and system, and highly recommended within the current context of available information. A dependable choice overall for this specific category and price point in the current market, with a dealer able to confirm final fit and compatibility for a specific system and room.