The Parasound NC 2250v2 is a stereo power amplifier in Parasound's NC Series, delivering 275 watts per channel into 8 ohms, 400 watts into 4 ohms, and 750 watts bridged into mono. It is THX Ultra2 certified and runs a fully discrete Class AB circuit with 45 amps of peak current per channel from a high-current toroidal transformer.
A rear-panel load selector switch extends 4 ohm rated performance to 2 ohm loads, making the NC 2250v2 compatible with speakers that present particularly demanding impedance dips. Two pairs of speaker outputs with front-panel A/B buttons and a rear-panel lockout switch provide flexible speaker switching. A switchable high-pass filter at either 20Hz or 40Hz protects speakers in bi-amplified configurations or systems where very low bass is handled by a separate subwoofer amplifier. ProHiFi is an authorised Parasound dealer in India.
Per-channel gain controls sit on the rear panel for precise level matching. The amp powers on via 12V trigger with a looping trigger output for downstream components, or via audio signal sensing with two sensitivity settings. AVForums awarded it a Highly Recommended in 2023, noting that movie and music sources bound into life when channeled through it, and that what goes in is literally what comes out.
The AC voltage selector on the rear panel covers 115V and 230V, confirming full India mains compatibility without a transformer. The 3U chassis is rack mountable with the optional RMK33 accessory.
Key Features
- 275W x 2 into 8 ohm; 400W x 2 into 4 ohm; 750W bridged mono
- THX Ultra2 certified; Class AB fully discrete circuitry
- 45A peak current per channel
- 2 ohm stable with rear load selector switch
- Two pairs of speaker outputs with front panel A/B switching
- Rear-panel lockout switch disables front A/B buttons
- High pass filter switchable at 20Hz or 40Hz
- Per-channel rear gain controls
- 12V trigger with looping output; audio sensing auto-on (2 levels)
- Gold-plated RCA inputs; heavy-duty 24k gold-plated 5-way speaker terminals
- 115/230V rear panel selector; India 230V compatible
- 3U chassis; 437 x 153 x 470mm; 19.5kg; rack mountable (RMK33 optional)
- AVForums Highly Recommended 2023
Warranty:
3-year manufacturer's warranty
Why Consider the Parasound NC 2250v2
The NC 2250v2 is the right choice for listeners who want THX Ultra2-certified stereo power at a more accessible price than the Halo A 23+, with practical features that the Halo range does not include. The dual speaker A/B outputs, 2 ohm load selector, switchable high-pass filter, and rear lockout make it particularly well suited to complex system configurations, bi-amplified setups, and home cinema installations. The 750 watt bridged mono mode gives a clear upgrade path, and the 115/230V rear selector means no step-down transformer is needed on Indian mains. AVForums' description of transparency, what goes in is literally what comes out, reflects the clean, uncoloured character that is a hallmark of the NC series design brief.
Ideal for
- Home cinema and music systems wanting THX Ultra2 power at a value price
- Systems with two pairs of speakers needing A/B switching from a single amplifier
- Bi-amplified setups using the built-in high-pass filter for speaker protection
- Speakers with demanding 2 ohm impedance dips requiring the load selector switch
- Rack-mounted installations needing a 3U chassis with 12V trigger looping
- Those wanting bridgeable mono capability for a future 750W upgrade path
Technical Specifications
| Specification |
Detail |
| Power Output |
| Stereo (8 ohm, all channels driven) |
275W x 2 |
| Stereo (4 ohm, all channels driven) |
400W x 2 |
| Stereo (2 ohm, load switch set to 2-3 ohm) |
400W x 2 |
| Bridged Mono (8 ohm) |
750W x 1 |
| Bridged Mono (4 ohm, load switch set to 2-3 ohm) |
750W x 1 |
| Peak Current per Channel |
45 amps |
| Dynamic Headroom |
1.6dB |
| Circuit Design |
| Topology |
Fully discrete Class AB |
| Certification |
THX Ultra2 |
| Minimum Load Impedance |
2 ohm (with rear load selector) |
| Performance |
| Frequency Response |
20Hz to 50kHz, plus 0 / minus 3dB at 1W |
| THD at Full Rated Output |
0.20% |
| THD at Average Listening |
0.015% |
| Intermodulation Distortion |
0.05% |
| SNR (A-weighted, rated output) |
114dB |
| SNR (Unweighted, rated output) |
106dB |
| Damping Factor |
Greater than 150 at 20Hz |
| Crosstalk at 1kHz |
85dB |
| Crosstalk at 10kHz |
73dB |
| Crosstalk at 20kHz |
67dB |
| Inputs and Outputs |
| RCA Inputs |
1 pair per channel (gold-plated) |
| Input Impedance |
33k ohm |
| Speaker Outputs |
2 pairs (A and B) with front panel switching |
| Speaker Terminals |
Heavy-duty 24k gold-plated 5-way |
| Rear Lockout Switch |
Yes (disables front A/B buttons) |
| Control Features |
| High Pass Filter |
Switchable 20Hz or 40Hz |
| Gain Controls |
Rear-panel per channel |
| Bridging Switch |
Yes (stereo or mono selection) |
| Load Selector Switch |
Yes (4 ohm or 2-3 ohm mode) |
| 12V Trigger |
Input with looping output (DC 9-12V, 15mA) |
| Audio Sensing |
Yes (1mV quieter / 6mV louder sensitivity) |
| Power |
| AC Mains Voltage |
110-120V or 220-240V, 50-60Hz (rear panel selectable) |
| Standby |
0.5W |
| Idle |
35W |
| Full Output |
1000W |
| General |
| Dimensions (W x H x D) |
437 x 153 x 470 mm (with feet) |
| Weight |
19.5 kg |
| Available Finishes |
Black |
| Chassis |
3U; rack mountable with optional RMK33 accessory |
| Country of Design |
United States |
| Awards |
AVForums Highly Recommended 2023 |