NuPrime STA-100 Stereo Amplifier
Best power amplifier for audiophiles seeking tube-like warmth and modern clarity.
Experience the best of both worlds with the NuPrime STA-9 Stereo Amplifier. This versatile amplifier masterfully blends the rich warmth of Class A amplification with the lightning-fast speed and clarity of Class D technology. Its ULCAM+Class D design delivers a vast soundstage, exceptional dynamics, and ultra-low distortion, creating an ideal balance of timbre and authoritative bass. Designed for audiophiles, it offers a transparent, dynamic, and luxuriously textured soundstage, bringing near-live performance to your listening room.
$799.00
Owner Satisfaction
4.6
/ 5
Category Rank
934
/ 1684
#934 in Power Amplifiers
Price vs Category Average
-90%
Below average
Power Output (Stereo)
212084
/ x W @ / Ohms
Who it's for
- Desktop audiophiles needing a powerful, space-saving amplifier
- Listeners who prioritize sonic clarity and fast, dynamic transients
- Home audio enthusiasts driving standard bookshelf or floorstanding speakers
Who should skip it
- Design-conscious buyers seeking a substantial, premium-looking centerpiece
- Pro-audio users requiring balanced XLR connections for noise rejection
- Audiophiles who prefer the lush, warm character of tube amplification
Performance breakdown
Sonic Versatility
Hybrid design successfully marries tube-like warmth with modern Class D precision.
Power Efficiency
High-speed switching delivers authoritative drive while maintaining a compact, cool footprint.
Dynamic Range
Exceptional transient response brings a near-live energy to complex musical passages.
Bridgeable Flexibility
Easily scales from a stereo setup to a potent monoblock configuration.
Signal Purity
Capacitor-free signal path ensures a clean, transparent, and uncolored audio delivery.
Build Compactness
Small form factor saves rack space without sacrificing high-current output capabilities.
Key Specs
Power Output (Stereo)
2 x 120W @ 8/4 Ohms
Power Output (Mono)
1 x 290W @ 8/4 Ohms
Frequency Response
10Hz to 50kHz
Total Harmonic Distortion (THD+N)
0.02% (Stereo) / 0.01% (Mono)
Signal to Noise Ratio
< -95dB
Input Impedance
47k Ohms
Dimensions
55 x 235 x 281 mm (H x W x D)
Weight
4kg
Features
- Class A warmth meets Class D speed
- Bridgeable for stereo or mono power
- Mimics attractive tube-amp sound
- High-speed switching frequency
- Signal path avoids capacitors
- New linear power supply
- High output current drive
- Enhanced even-order harmonic circuitry
What customers say
Customer sentiment strongly favors the NuPrime STA-100, highlighting its exceptional sound quality and value. Reviewers consistently praise the amplifier's clarity and detail retrieval, noting its neutral presentation punches above its weight class. The compact Class D design delivers robust power and excellent bass control, driving demanding speakers with surprising authority. Many appreciate the space saving without sacrificing performance. Key themes center on the sound's transparency, creating an immersive experience. Build quality is described as robust and reliable, reinforcing its long term value perception. The consensus positions the STA-100 as a giant killer offering audiophile grade performance for its price bracket.
Know before you buy
Yes, the STA-100 is bridgeable. When configured in mono mode, it delivers a more powerful output of 290W into 8 or 4 Ohms, compared to the 120W per channel in stereo mode.
No, the STA-100 is a dedicated power amplifier and does not include an integrated Digital-to-Analog Converter. You will need to connect it to an external DAC or a preamplifier with analog outputs.
The STA-100 uses a hybrid design that combines the warmth and harmonic richness typically associated with Class A or tube amplifiers with the efficiency, speed, and clarity of Class D technology.
It features both RCA (unbalanced) and XLR (balanced) inputs, allowing you to connect it to a wide range of preamplifiers and source components.
Yes, the STA-100 is designed to handle both 4 Ohm and 8 Ohm loads effectively, thanks to its high output current drive capabilities.
No, the STA-100 does not include a remote control. As a power amplifier, it is intended to be controlled via your preamplifier or integrated amplifier's volume and source selection.
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