Parasound
Parasound NewClassic 2125 v.2 Two-Channel Power Amplifier
Best high-performance power amplifier for space-conscious home theater enthusiasts.
The Parasound NewClassic 2125 v.2 is a compact, THX Ultra2-certified stereo power amplifier designed to deliver clean, controlled power to your speakers. It offers 150 watts per channel into 8 ohms and 225 watts per channel into 4 ohms, with the ability to bridge to 400 watts in mono for demanding applications. Its slim 2U chassis fits easily into racks or tight spaces. The v.2 upgrades include updated trigger connections and a simplified auto-on system, while retaining the acclaimed audio circuits of the original. This Class AB amplifier uses discrete components and a toroidal transformer for efficient, high-current delivery, ensuring dynamic sound and excellent signal-to-noise ratio.
$1250.00
Owner Satisfaction
4.7
/ 5
Category Rank
421
/ 1684
#421 in Power Amplifiers
Price vs Category Average
-85%
Below average
Channels
2
Who it's for
- Audiophiles driving demanding speakers with dynamic authority
- System builders needing flexible integration for complex setups
- Listeners prioritizing long-term durability and consistent performance
Who should skip it
- Users with limited ventilation or enclosed cabinet space
- Design-conscious buyers seeking a modern, visually striking aesthetic
- Minimalists wanting an all-in-one solution with digital connectivity
Performance breakdown
Power Delivery
High-current design effortlessly drives demanding speakers with clean, authoritative headroom.
Sonic Fidelity
Class AB topology provides a refined, balanced sound profile for critical listening.
Installation Versatility
Compact 2U chassis and flexible switching options simplify complex rack setups.
Build Integrity
Discrete components and a robust toroidal transformer ensure long-term, reliable performance.
System Integration
THX Ultra2 certification guarantees seamless compatibility with high-end home theater environments.
Operational Efficiency
Updated trigger and auto-on systems make daily power management completely hands-off.
Key Specs
Channels
2
Power Output
150 watts per channel into 8 ohms, 225 watts per channel into 4 ohms
Bridged Mono Power
400 watts into 4 ohms
THX Ultra2 Certified
Amplifier Class
Class AB
Circuit Design
Fully discrete components
Power Transformer
Toroidal
Signal-to-Noise Ratio
114 dB (A-weighted at full output)
Features
- Compact 2U chassis fits in tight spaces
- THX Ultra2 certification for cinema-quality sound
- High-current design for demanding speakers
- Class AB topology balances efficiency and sonic quality
- Toroidal power transformer for quiet and efficient operation
- Updated 3.5mm trigger connections and simplified auto-on
- A/B speaker lockout for installer use
- Switchable high-pass filter for subwoofer integration
What customers say
Customers consistently praise the Parasound NewClassic 2125 v.2 for its exceptional sound quality and robust reliability. Many reviewers highlight the amplifier's ability to deliver clean, powerful audio, significantly enhancing their listening experience across diverse speaker setups. Its dependable performance and solid build inspire confidence, making it a highly regarded component in home audio systems. Users frequently commend its consistent output and long term durability, affirming its status as a trustworthy investment for serious audiophiles.
Know before you buy
Yes, the 2125 v.2 is designed to handle demanding loads and includes a switchable impedance setting to safely support 2-ohm speakers.
THX Ultra2 certification ensures the amplifier meets rigorous standards for power output, low distortion, and thermal stability, guaranteeing cinema-quality performance in large rooms.
Bridging combines both channels into a single 400-watt mono output, which is ideal if you need extra power for a single high-performance passive subwoofer or a particularly power-hungry speaker.
Yes, it features a switchable high-pass filter that can be set to 20 Hz or 40 Hz, which helps clean up low-frequency clutter and allows your main speakers to focus on mid and high-range frequencies.
Yes, the 2125 v.2 features a compact 2U chassis, making it easy to integrate into standard rack systems or tight AV cabinets.
The amplifier uses audio-sensing technology to detect an incoming signal and power on automatically. It includes two sensitivity settings, allowing you to adjust how easily it wakes up based on your source equipment.
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$1250