Naim NAC 72 + NAP 140
The icon to hunt for 07 — the way into Naim: the pre and power amp of 'pace, rhythm and timing', and the upgrade path that never ends
The Quad 33/303 told the story of the first separates in our journey, with a British, transparent character. The Naim NAC 72 + NAP 140 pairing is still a pre and a power amp, but another school and another era: it is the classic way into the Naim world, the system that made rhythmic drive — pace, rhythm and timing — its signature, and that in the 1980s formed, with the Linn LP12, the most celebrated source-first pairing in hi-fi. As always, I speak as a buyer, and the general method for used gear is in the restoration hub. Here is what concerns this pair: why it is a classic, how its particular logic works, and the three things to know before hunting it down — the DINs, the phono boards and the service.
The myth: the way into Naim and into PRaT
Naim was born in Salisbury out of the stubbornness of Julian Vereker, who rejected the orthodoxy of the day — the idea that the amplifier was merely "a straight wire with gain", a neutral means of driving the speakers. For Naim the amplifier matters, and the source matters most of all: it is the same source-first conviction as the Linn LP12, and it is no accident that Linn and Naim became the reference pairing of an entire way of listening.
The sonic signature has a name their enthusiasts repeat like a mantra: pace, rhythm and timing, PRaT. Not smoothness, not showy detail, but the sense of rhythm, of drive, of music moving forward and setting your foot tapping. The NAC 72 + NAP 140 pair is the most accessible way to know that character: it is the classic entry to the period Naim range — the one in the green "olive" livery — and it remains one of the most loved starting points among collectors.
Naim was born in Salisbury out of the stubbornness of Julian Vereker, who rejected the orthodoxy of the day — the idea that the amplifier was merely "a straight wire with gain", a neutral means of driving the speakers. For Naim the amplifier matters, and the source matters most of all: it is the same source-first conviction as the Linn LP12, and it is no accident that Linn and Naim became the reference pairing of an entire way of listening.
The sonic signature has a name their enthusiasts repeat like a mantra: pace, rhythm and timing, PRaT. Not smoothness, not showy detail, but the sense of rhythm, of drive, of music moving forward and setting your foot tapping. The NAC 72 + NAP 140 pair is the most accessible way to know that character: it is the classic entry to the period Naim range — the one in the green "olive" livery — and it remains one of the most loved starting points among collectors.
How it works: pre plus power, and the NAC 72 without a power supply
Like the Quad, it is a two-box system: the NAC 72 is the preamplifier, choosing the source and handling the volume; the NAP 140 is the power amp, delivering about 45 watts per channel into 8 ohms and driving the speakers. But there is a Naim peculiarity to grasp at once, because it shapes what you buy.
The NAC 72 has no internal power supply: it draws its current from the power amp — the NAP 140 supplies it — or from a dedicated external supply, the HiCap, which is the first, classic upgrade step. In the basic configuration, then, the 72 is powered by the 140 and the pair works on its own; the HiCap is added later, when you want to climb. The phono stage, in turn, lives inside the preamp: they are plug-in boards, in MM or MC versions, so the cartridge is chosen to match the boards fitted. It is a detail that matters for vinyl listeners, and we come back to it below.
Like the Quad, it is a two-box system: the NAC 72 is the preamplifier, choosing the source and handling the volume; the NAP 140 is the power amp, delivering about 45 watts per channel into 8 ohms and driving the speakers. But there is a Naim peculiarity to grasp at once, because it shapes what you buy.
The NAC 72 has no internal power supply: it draws its current from the power amp — the NAP 140 supplies it — or from a dedicated external supply, the HiCap, which is the first, classic upgrade step. In the basic configuration, then, the 72 is powered by the 140 and the pair works on its own; the HiCap is added later, when you want to climb. The phono stage, in turn, lives inside the preamp: they are plug-in boards, in MM or MC versions, so the cartridge is chosen to match the boards fitted. It is a detail that matters for vinyl listeners, and we come back to it below.
Why it is a classic: the deepest upgrade path
The real reason the 72/140 pair is an icon to hunt for is not only the sound: it is that it opens the door to a system that grows almost without end. Over decades Naim built the deepest upgrade hierarchy in hi-fi, and the 72/140 is the way in.
The path, in orders of magnitude, is this: you start from the pair, add a HiCap to power the preamp better, then you can climb to a higher preamplifier — a NAC 82, a 52 — and to a bigger power amp, a NAP 250. One piece at a time, without throwing away the rest. It is the same logic as the LP12, applied to amplification: which is why, in our £3000 system, the Naim pair is the link that lets the system never finish improving.
The real reason the 72/140 pair is an icon to hunt for is not only the sound: it is that it opens the door to a system that grows almost without end. Over decades Naim built the deepest upgrade hierarchy in hi-fi, and the 72/140 is the way in.
The path, in orders of magnitude, is this: you start from the pair, add a HiCap to power the preamp better, then you can climb to a higher preamplifier — a NAC 82, a 52 — and to a bigger power amp, a NAP 250. One piece at a time, without throwing away the rest. It is the same logic as the LP12, applied to amplification: which is why, in our £3000 system, the Naim pair is the link that lets the system never finish improving.
What to check before buying used
Compared with the Quad, the difficulty is medium: the pair is more recent and the pieces are more common, but there are three Naim-specific things to know.
- The DIN connections. Naim always preferred DIN connectors, against the RCA used by almost everyone else. You therefore need the dedicated Naim cabling — or the right adapters — to connect it all. Budget for it: it is not a problem, but it must be planned. - The phono boards. Check which phono boards are fitted in the 72 (MM or MC), or whether it lacks them: they can be bought separately and turn up regularly used. Choose the cartridge to match the boards, not the other way round. - The service. These are "olive"-era machines, now well past the age of their first service: many need a second or third. An unserviced period Naim can lose sparkle or give trouble at the controls. Buy a pair already sorted with receipts, or budget the re-capping. - The pair. As with the Quad, the 72 and 140 are sometimes found together, often separately: any 72 works with any 140, so you can hunt them one at a time — checking only that both are (or will be) serviced.
Compared with the Quad, the difficulty is medium: the pair is more recent and the pieces are more common, but there are three Naim-specific things to know.
- The DIN connections. Naim always preferred DIN connectors, against the RCA used by almost everyone else. You therefore need the dedicated Naim cabling — or the right adapters — to connect it all. Budget for it: it is not a problem, but it must be planned. - The phono boards. Check which phono boards are fitted in the 72 (MM or MC), or whether it lacks them: they can be bought separately and turn up regularly used. Choose the cartridge to match the boards, not the other way round. - The service. These are "olive"-era machines, now well past the age of their first service: many need a second or third. An unserviced period Naim can lose sparkle or give trouble at the controls. Buy a pair already sorted with receipts, or budget the re-capping. - The pair. As with the Quad, the 72 and 140 are sometimes found together, often separately: any 72 works with any 140, so you can hunt them one at a time — checking only that both are (or will be) serviced.
The NAC 72 + NAP 140 pair is the icon to hunt for to enter the Naim world by the right door: the pre and power amp of pace, rhythm and timing, the rhythmic character that defined a way of listening and that, with the Linn LP12, formed the most celebrated source-first pairing in hi-fi. The NAP 140 makes 45 watts, the NAC 72 draws its power from the power amp or from a HiCap, and the phono lives in its plug-in MM or MC boards. But the real reason to hunt it down is the deepest upgrade path there is: a HiCap, then a higher preamp, then a bigger power amp, one piece at a time. Before buying used, remember the three Naim things: the DIN cables, the phono boards to check, and the service — these are machines that almost always want one. Buy it sorted, and you will have the way into a system that grows for ever.
Why does the NAC 72 have no internal power supply?
It is a Naim design choice: separating the power supply from the preamplifier reduces interference and improves the sound. In the basic configuration the 72 is powered by the NAP 140 power amp; when you want to climb, you add a dedicated external supply, the HiCap. It is the first, classic upgrade step for the pair.
What is the HiCap, and do I need it straight away?
The HiCap is the dedicated external power supply for the preamplifier: it improves the 72's sound and frees the power amp from the job of powering it. You do not need it straight away — the 72/140 pair works beautifully on its own — but it is the most recommended first upgrade, and the sign that you have entered a system built to grow.
Are the DIN connections a problem?
Not a problem, but a peculiarity to know: Naim uses DIN connectors where almost everyone else uses RCA. You need the dedicated Naim cables or the right adapters to connect sources and power amp. Budget for it when you plan the purchase, so you do not end up with the boxes but no way to connect them.
Which cartridge can I use with the NAC 72?
It depends on the phono boards fitted in the 72: with MM boards, an MM cartridge; with MC boards, an MC. Check which boards the example you buy has, or buy them separately — they turn up used. The rule is always the same: decide the boards first, then choose the cartridge that works with them.
