Back in around 1990, CD music sales bypassed both vinyl record and audio cassette sales for the first time. Hi-fi systems adapted to the change, in what at the time appeared to be the slow, and terminal decline of the vinyl record, which had been first conjured up by Emilie Berliner way back in 1881...

For those that don’t know - Turntable replay requires some rather special treatment by an amplifier's electronics. A cartridge and stylus can be thought of in the terms of a 'mini dynamo', the music is reproduced by the stylus tracing the three dimensional groove in the vinyl. The stylus connects to the cartridge's coils or magnets, which are located within the cartridge body. The stylus movement in the record groove creates a movement between these micro sized magnets and the coils, and a really small electrical signal is generated at the cartridge’s output. Special electronics are required to boost this super tiny signal to what might be called a 'line level', a level similar to the output of a CD player or DAC. In addition to this tiny signal that an amplifier’s phono stage has to deal with, there is the added complexity of the RIAA curve.

RIAA equalization is a form of pre-emphasis on recording and de-emphasis on playback. When a record is pressed at the recording studio, the bass frequencies are reduced by a really significant level. Without this, the bass frequencies would be near impossible to physically cut on to the record, this requires our amplifier to boost up the bass frequencies on playback to attain a flat response. However, there are two parts to the RIAA curve, in a bid to reduce both record noise and to ease the cutting of a record, treble frequencies are boosted when the record is produced, and need to be reduced when played back.

From around 1990 onwards, the majority of amplifiers tended to be designed without an inbuilt phono preamplifier. In some cases it simply wasn't needed if you had no turntable, and where it was needed, a new market in separate phono preamplifiers was created.

Naim Audio also took this route, and with the current vinyl revival showing no signs of slowing down, we now have this new phono preamplifier as part of the new classic range. The new NVC TT phono preamplifier comes in a traditional cast aluminium case, and is currently the smallest box within the new Naim classics. The quality of build is exemplary, the quality of the enclosure’s machining and anodising is superb, with a perfectly black perspex fascia, embellished with an illuminated, dimmable, Naim logo.

At the rear of the new NVC TT are all the connections and configurable switches. Two separate inputs are provided for MC (Moving Coil) and MM (Moving Magnet) with a switch providing selection, and a further switch offering up a choice between gain settings for MC cartridges. Next along are a pair of RCA outputs, for non-Naim gear, and Naim's recommended DIN connection (for all of their amplifiers). The connection for a power supply is to the side of this, which also allows the unit to be powered from a suitable Naim pre-amplifier, with one simple multi-pin connection for both power and audio. It is here that the dedicated, matching power supply, the NPX TT, can be very simply fitted as an upgrade for Naim users, or for any listeners using other than a Naim main or pre-amplifier. Just below the output connections are a pair of multi-position switches that vary the resistive and capacitive load presented by the amplifier, to fine-tune to any cartridge needs. Very comprehensive adjustments can be made.

Both preamplifier and power supplywere developed as part of Naim's limited edition turntable; The Solstice. However, this is the first time these exciting new products have been available on their own.

Moving coil and moving magnet cartridges have different needs. A moving magnet cartridge features larger fixed coils to pick up the magnet's subtle movements to generate the signal; the moving coil cartridge has the magnet fixed, and a micro sized miniature coil generating output. The micro sized coils require a lower 'load' from the pre-amplifier, and require much more amplification. By offering separate inputs, Naim can offer the best for both types, and compromise neither. A typical 'MM' cartridge produces 5mv, or 0.005 of a volt. An MC cartridge 5 microvolts, or 0.0005 of a volt! You can now see why a substantial power supply with robust regulation are required and supplied by the Naim design. Electronics are complex things; the cheapest way for a manufacturer to produce phono preamp is to purchase a simple IC integrated circuit. With this, of course, you are at the whim of the IC manufacturer; mass produced and cheap doesn't really suit the remit of a state of the art phono stage, and of course Naim do not go down that route. Fully discrete components are used to a bespoke and newly developed Naim design, using high end audiophile grade components.

The tech specs of the unit are truly impressive. Distortion is lower than 0.005% with a high 84 dB signal to noise ratio, helping produce a transparent and clean clear sound. The RIAA curve is reproduced with incredible accuracy, only deviating by the most tiny 0.1dB.

Of course with the resurgence of high end audiophile turntables and the increase in fidelity and design, this level of performance is needed The tiny information in the grooves has never been so accurately tracked. So the accuracy, quietness and cleanliness of the new Naim phono pre-amplifier can further resolve the most minute of details, enhancing our musical enjoyment.

The natural partner for the new unit is the New Classic range, and in store we connected it up to the NSC 222 streaming pre-amplifier and new classic NAP 250, driving Dynaudio Confidence loudspeakers. Turntable was a Linn LP12 Selekt fitted with an Arko arm and a Kendo cartridge (Moving Coil). A pretty cool, state of the art design, and a classic natural partner for the Naim. A classic system. So our auditioning began...

A classic system deserves some classic vinyl. Bob James album “Two”, produced in 1975 by the famous Rudy Van Gelder at his Englewood Cliffs Studio in New York. An early example of early complex multi-tracking and multi-layering of sound. This is a huge sounding recording, but subtly controlled in its dynamics. The 'TT phono stage placed in the above system reveled in displaying every level and layer of this recording. It wasn't forced, it wasn't emphasized. Bob James's keyboard work stood out cleanly from the complex and layered background. We played this album twice, once with the device powered from the '222 pre', and then connected to the NPX TT power supply. It was immediately apparent this power supply provides an incredible jump in performance, maxing out every parameter of the 'TT's performance.

Jumping forward some 40 years with our records, and a much more modern take on a jazz recording, Badbadnotgood (with Ghostface Killah) Sour Soul is, of course, far more dynamic and far more modern than Bob James.. a soulful trip-hop recording. The dynamics absolutely popped with the Naim phono pre-amplifier. Channel separation is huge, dynamics are huge. Bass extension, clarity, and weight are better than most digital sources. The absolute lack of background noise and the ultra-low distortion really let the music from the vinyl flow. No rose tinted vinyl spectacles here, this is modern state-of-the-art sound. Traditional Naim precision of rhythm and timing, but with a more up-to-date musical presentation, empowered with huge detail resolution.

These are wonderful products, designed for those seeking the very best in their vinyl experience. Naim have taken both technical and subjective performance to another level. For the few who can choose, an audition is highly recommended.

Thanks for reading

Haden - Audio T Manchester

Come along and speak to Munir, Dave and James at the store to arrange a demonstration.

If you’ve enjoyed this, why not go ahead and read some more of our other blogs, and be sure to follow us on our social media channels below…