NAD 3120 (c. 1988–1992)
The NAD 3120 is a no-frills budget integrated amplifier from the late 1980s. It was never flashy and never expensive. It was the most basic model in NAD's "New Acoustic Dimension" range at the time, with a black faceplate that matched the new look NAD was rolling out around 1988-1990. The asking price when new was around £120.
The 3120 is NAD's usual engineering philosophy at entry level. The circuit is straightforward, built around a high-current power supply with an oversized transformer, and rated at a modest 25 watts per channel into 8 ohms. Modest power with generous current delivery was the same thinking that made the 3020 famous, and it gives the 3120 more authority with real-world speakers than the wattage figure suggests. There is no phono stage. You get a single pair of line-level RCA inputs, an input selector toggle, small bass and treble controls, and one pair of 5-way binding posts for speakers. It is about as basic as integrated amplifiers get, and that was the point.
The Vintage Audio Blog, writing around 2016, described the 3120 as presenting "a clean detailed but smooth sound quality that in its own way out-performed its modest 25 or so watts." That was roughly three decades after the amp first appeared. It matches the general consensus among owners who have kept these alive: it is not refined, not powerful, and not for difficult loads, but it is musical, punchy, and satisfying on efficient speakers. One owner on an audio forum noted it "sounds better than similar sized Japanese amps from that era."
Surviving documentation on the 3120 is thin. There is no official service manual, and no measured review in the major magazines of the period that we can confirm. What we know comes from enthusiast sources and dealer commentary, all consistent with each other. The practical caveats are plain enough: electrolytic capacitors age in these early-1990s amps, spare parts are essentially unavailable, and the volume control may need cleaning after decades of use. Working examples that cost about £120 new still get described as "an audio classic" and "punchy" a quarter-century on.
Known Specifications
- Power output: 25W per channel RMS into 8 ohms
- Inputs: single pair of line-level RCA (no phono stage)
- Controls: input selector, volume, bass, treble
- Speaker outputs: one pair of 5-way binding posts
- Original price: approximately £120
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