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NC 2125v2 Power Amp
NC 2125v2 Power Amp
NC 2125v2 Power Amp
Parasound

NC 2125v2 Power Amp

Model A2125 · Series New Classic

Compact 125 Wpc stereo amplifier (bridges to 400 W). THX Ultra2 certified, dual speaker outputs, automatic turn-on, and high-pass filter—clean, powerful sound.

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At a glance

All specifications
Current Capacity
35 amps peak per channel
IM Distortion
0.05 %
Transient IM Distortion
Not measurable
Input Impedance
33 kΩ
Input Sensitivity
1 V in for 28.28 V out
Damping Factor
Over 150 at 20Hz
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Overview

Clean Power You Can Feel

Drop the NC 2125v2 into your system and the whole presentation tightens up. Voices lock center‑stage, bass gets punchy (not boomy), and big moments hit with the kind of ease that turns casual listening into “just one more track.”

Designed for real‑world rigs, this compact 2U, Class‑AB workhorse delivers 150 W x2 into 8 Ω, 225 W x2 into 4 Ω, and bridges to 400 W mono. It’s THX Ultra2 certified, adds dual A/B speaker outputs with a front‑panel lockout, and is happy with tough loads thanks to 35 A peak current and a high‑current toroidal transformer. Integration is simple: Gold-plated RCA input jacks, 12 V trigger or audio‑sense auto‑on, and a switchable 20/40 Hz high‑pass filter to protect smaller speakers or squeeze more headroom.

Highlights

  • THX Ultra2 certified
  • 150 watts x 2 into 8 Ω (all channels driven)
  • 225 watts x 2 into 4 Ω or 2 Ω (all channels driven)
  • 400 watts x 1 bridged into 8 Ω or 4 Ω
  • 35 amps peak current per channel
  • 2 Ohm stable operation with load selector switch
  • Two pairs of speaker outputs with front panel A/B buttons
  • Rear-mounted lockout switch disables front A/B buttons
  • High pass filter, switchable for 20Hz or 40Hz
  • Automatic on/off by DC trigger with looping output
  • Automatic on/off by audio signal with 2 sensitivity settings
  • Fully discrete circuitry with high current toroid transformer
  • Bridging switch for stereo or mono operation
  • Efficient, low heat design
  • DC Servo and relay protection circuits
  • Rear-mounted left and right gain controls
  • Standby, channel status and high temperature indicators
  • Gold-plated RCA input jacks
  • Heavy duty 24k gold-plated 5-way speaker terminals
  • 120/230v selector on rear panel
  • 2U rack mount kit available separately (Model RMK22)

Specifications

Specifications

All Channels Driven
150W x 2 (8Ω), 225W x 2 (4Ω), 225W x 2(2Ω Load switch set to 2-3Ω)
Bridged Mono
400W x 1 (8Ω), 400W x 1 (4Ω Load switch set to 2-3Ω)
Current Capacity
35 amps peak per channel
Frequency Response
20 Hz - 50 kHz, +0/-3 dB, 1 watt
Dynamic Headroom
1.3 dB, 0.25% at full rated output, 0.015% at average listening levels
IM Distortion
0.05 %
Transient IM Distortion
Not measurable
S/N Ratio Rated Output
114 dB (IHF A-weighted), 106 dB (unweighted)
S/N Ratio 2.828V Output
93 dB (IHF A-weighted), 84 dB (unweighted)
Input Impedance
33 kΩ
Input Sensitivity
1 V in for 28.28 V out
THX standard Inter-Channel Crosstalk
85 dB @1 kHz, 73 dB @10 kHz, 67 dB @ 20kHz
Damping Factor
Over 150 at 20Hz
12V Trigger Turn On
DC 9 – 12V
15 mA Audio Turn On
Quieter: 1 mV, Louder: 6 mV
AC Power Requirements: 110 - 120 V / 220 -240 V, 50 - 60 Hz
0.5 watts standby 32 watts Idle (no audio) 550 watts full output
Dimensions
Width: 17.25" Depth: 14" Chassis Only, 15" Chassis and Speaker Terminals, 16" Deep with cables connected Height: 4.25" with feet, 3.5" panel only (2U) (437 x 406 x 107mm, 88.2 mm panel only) Net Weight - 27 lbs (12.3 kg)

Specifications

  • Rack Mount Accessory May be Purchased Separately: RMK22

Downloads

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Awards and press

1

  • This combination of audio performance without the use of tone controls or filters is dynamic, precise and detailed. Control is evident across the audio spectrum even at high volume where there is sufficient power in reserve. Futhermore, there is no loss of resolution, even with quieter music and low level listening. Parasound manages to reproduce the essence of the vast majority of commercial recordings and various genres on CD or the stereo audio tracks on DVD or BluRay that would satisfy even the most demanding listener. I think the audience appreciated the especially strong, dynamic sound with superb control of bass at all volume levels and an imperceptible loss of the finest details on several audiophile SACDs.

    HiFi Voice (Czech Republic) October 2015

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