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NuPrime Audio ST-10 Power Amplifier


Product Description

Manufacturer's Description:

Reference LE class power amplifier

The ST-10 amplifier is NuPrime's Reference LE 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



2 x RCA


Five-way binding posts

Power Output:

150W x 2 at 8 Ohms; 150W x 2 @ 4 Ohms


X 28

Input Impedance:

23.5k Ohms


0.89 V to rated power



Frequency Response:

0 Hz to 60,000 Hz

S/N Ratio:

110dB at 1W, 10W, 100W


59 mm H x 215.4 mm W x 394 mm D


6 kg





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