NuPrime ST 10 Stereo Amplifier

‘The NuPrime ST 10 is the best digital power amplifier I’ve heard to date’ – The Absolute Sound



” …delivers delicacy and subtlety that more closely approaches what I hear from a live musical event.

…over the years I’ve reviewed and used plenty of digital power amplifiers from Bel Canto, Wyred4Sound, April Music, and others, and I appreciate what a well-designed model can bring to a system. And it happens that the NuPrime ST-10 is the best solid state power amplifier I’ve heard to date…

Within their product categories the DAC-10H DAC/preamp and ST-10 basic power amplifier are priced at the lower mid-level, yet they both deliver a level of performance that could be considered exemplary regardless of their cost… “,

– Steven Stone, The Absolute Sound (read the review)

NuPrime ST 10 Stereo Amplifier 2


NuPrime ST 10 Stereo Amplifier

The ST-10 amplifier is NuPrime’s Reference LE (near-reference) power amplifier for listeners who require a reference-class amplifier at a somewhat lesser power rating of 2 x 150W (8 Ohm). NuPrime’s sonic character stands well apart from – and indeed above – the soft, cushy sound we often associate with most tubed amplification and the dry, clinically edgy sound we often associate with solid-state and switching technology. Rarely does an amp achieve an ideal balance of richly textured timbres and harmonics, bottom-end authority, startling dynamics, exquisite low-level detail, and a fully revealed, fully dimensional sound stage against a backdrop of mile-deep silence.


NuPrime ST 10 Stereo Amplifier 4


The “LE” of Reference LE designates near-reference-class performance. The fourth generation (V4 amplifier module) of this patented amplifier design outperforms its predecessor in several aspects:

•It lowers the noise floor by an astounding 20dB and elevates the output stage to 85% efficiency.
•Shortened circuit pathways result in a 20% improvement in through-put.
•Improved reliability in no-load condition and short circuit protection.
•Increased output current drive capability for low impedance speakers.
•Increased switching frequency to 600 KHz and an improved musical sampling rate.
•Improved S/N ratio and dynamic range.
•New linear power supply with a high-efficiency toroidal transformer. Reduced high-frequency noise and strengthened low-frequency performance.
•Signal path avoids cross-linking capacitors, thus achieving a frequency response at DC level for pure musical enjoyment.
•Enhanced even-order harmonic (H2) circuitry resembling the most attractive features of tubed-amp sound without its drawbacks and limitations.

The NuPrime Sound

•Vast soundstage
•Wide, lightning-fast dynamics
•Ultra-low distortion and noise
•Music emerges from a pristine background, with delicate details and nuances intact


NuPrime ST 10 Stereo Amplifier 1


•Input:2 x RCA
•Output:Five-way binding posts
•Power Output:150W x 2 at 8 Ohms
•Gain:28 dB
•Input Impedance:23.5k Ohms
•Sensitivity:0.89 V to rated power
•Frequency Response:0 Hz to 60,000 Hz
•S/N Ratio:110dB at 1W, 10W, 100W
•Dimensions:59 mm H x 215.4 mm W x 394 mm D
•Weight:6 kg