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NuPrime ST-10 Reference LE class power amplifier BLACK

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NuPrime ST-10 Reference LE class power amplifier BLACK

Reference LE class power 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.

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


• Input:2 x RCA
• Output:Five-way binding posts
• Power Output:150W x 2 at 8 Ohms; 150W x 2 @ 4 Ohms
• Gain: X 28
• Input Impedance:23.5k Ohms
• Sensitivity:0.89 V to rated power
• THD+N:0.01%
• 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

 NuPrime ST-10 rear panel



OUR TOP PICKS by The Absolute Sound

"...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 ST-10 is the best digital 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, download the guide here.


Awarded in The Absolute Sound 2017 Editor's Choice Awards

TAS Ed's Choice award 2017 




Front panel 




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