The Parasound ZoneMaster ZM2350 is a high-power stereo amplifier delivering 350 watts per channel into 8 ohms and 600 watts per channel into 4 or 2 ohms, designed for applications that demand sustained power, flexible output modes, and easy integration with systems that lack dedicated preamplifier outputs.
A speaker-level input allows the ZM2350 to connect directly to the speaker outputs of an AV receiver or integrated amplifier, making it practical for adding subwoofer drive or boosting a zone without requiring a separate preamplifier output. A dedicated subwoofer mode with an 80Hz, 24dB per octave analogue low-pass crossover lets the ZM2350 drive passive subwoofers directly from a full-range source signal without an external crossover. A switchable 30Hz or 80Hz high-pass filter protects smaller main speakers in bi-amplified or zone configurations. ProHiFi is an authorised Parasound dealer in India.
Two pairs of speaker outputs with front-panel A/B switching and rear-panel lockout, mono mode for single-speaker applications, looping left and right preamp outputs, and a subwoofer preamp output at 80Hz extend the ZM2350's connectivity well beyond a conventional stereo power amplifier. The Class AB input stage with premium Class D power stage keeps heat low despite the high output rating. The power supply accepts 110-240V AC automatically, confirming India mains compatibility.
Audio Beatnik called it the real thing and highly recommended, noting buyers will get much more than they expect for the price. HIFI Sound Enthusiast called it a value amp they can highly recommend for the price, confirming it delivers on all levels across professional and consumer use cases.
Key Features
- 350W x 2 into 8 ohm; 600W x 2 into 4 or 2 ohm
- Class AB input stage with premium Class D power stage
- Subwoofer mode: 80Hz, 24dB/octave analogue low-pass to speaker outputs
- Speaker-level input for systems without preamplifier outputs
- High-pass filter switchable at 30Hz or 80Hz, 12dB per octave
- Two pairs of speaker outputs with A/B front panel switching
- Rear-panel lockout switch disables front A/B buttons
- Mono mode for single-speaker applications
- Looping L/R preamp outputs and 80Hz subwoofer preamp output
- Per-channel input level controls
- Auto turn-on by 12V trigger with looping output or audio sensing
- 110-240V AC automatic; India 230V compatible; 2U rack chassis
- 438 x 108 x 368mm; 6.8kg; Black
- Audio Beatnik Highly Recommended; HIFI Sound Enthusiast Highly Recommended
Warranty:
3-year manufacturer's warranty
Why Consider the Parasound ZoneMaster ZM2350
The ZM2350 is the right choice for listeners who need high-power stereo amplification with built-in subwoofer crossover capability and the flexibility to integrate with systems that have no dedicated preamplifier outputs. The speaker-level input eliminates a common installation barrier, the subwoofer mode with 80Hz low-pass at 24dB per octave replaces the need for an external crossover when driving passive subs, and the 600 watts into 4 ohms ensures demanding loads are handled without thermal stress. For custom installation, outdoor zone, garage, or multi-room applications where long cable runs and varied speaker loads are the norm, the ZM2350 provides a robust, professionally specified amplifier at a price that Audio Beatnik confirmed gives significantly more than its cost suggests.
Ideal for
- Passive subwoofer drive using the built-in 80Hz low-pass subwoofer mode
- Systems without preamplifier outputs using the speaker-level input for integration
- Outdoor zone amplification where long cable runs require high power reserve
- Multi-room or garage installations needing sustained 350-600W per channel
- Two-speaker-pair setups using the A/B switching for two rooms or two speaker pairs
- Rack-mounted installations requiring a 2U chassis with looping 12V trigger
Technical Specifications
| Specification |
Detail |
| Power Output |
| Stereo (8 ohm, both channels) |
350W x 2 (RMS, 20Hz to 20kHz) |
| Stereo (4 ohm, both channels) |
600W x 2 (RMS, 20Hz to 20kHz) |
| Stereo (2 ohm, both channels) |
600W x 2 (RMS, 20Hz to 20kHz) |
| Minimum Speaker Impedance (Stereo/Mono) |
2 ohm |
| Minimum Speaker Impedance (Sub Mode) |
4 ohm |
| Circuit Design |
| Topology |
Class AB input stage with premium Class D power stage |
| Performance |
| Frequency Response |
10Hz to 70kHz, plus 0 / minus 3dB; 20Hz to 20kHz, plus 0 / minus 0.8dB |
| THD at Typical Listening Levels |
Less than 0.05% |
| THD at Full Power |
Less than 0.9% |
| SNR (A-weighted) |
Greater than 114dB |
| SNR (Unweighted) |
Greater than 100dB |
| Interchannel Crosstalk at 20kHz |
70dB |
| Total Gain (level controls at max) |
29dB |
| Input Sensitivity (full output) |
2V for 350W into 8 ohm |
| Crossovers and Filters |
| Subwoofer Mode Low-Pass |
80Hz, 24dB per octave |
| High-Pass Filter |
Switchable 30Hz or 80Hz, 12dB per octave |
| Inputs and Outputs |
| Line-Level RCA Inputs |
1 pair (with left and right level controls) |
| Speaker-Level Input |
Yes (for systems without preamplifier outputs) |
| Speaker Outputs |
2 pairs (A and B) with front panel A/B switching |
| Rear Lockout Switch |
Yes (disables front A/B buttons) |
| Looping L/R Preamp Outputs |
Yes (RCA) |
| Subwoofer Preamp Output |
Yes (80Hz low-pass, RCA) |
| Mono Full-Range Preamp Output |
Yes |
| Mono Mode |
Yes (combines L and R for single speaker) |
| Control |
| 12V Trigger |
Input with looping output (9-12VDC, 5mA) |
| Audio Sensing |
Yes (2mV; 8-15 minute turn-off delay) |
| Power |
| AC Mains Voltage |
110-240 VAC, 50/60Hz (automatic) |
| Standby |
0.5W |
| Idle |
30W |
| Typical Listening |
100W |
| Maximum |
1500W |
| General |
| Dimensions (W x H x D) |
438 x 108 x 368 mm (with feet) |
| Weight |
6.8 kg |
| Available Finishes |
Black |
| Chassis |
2U; rack mount hardware included |
| Country of Design |
United States |
| Awards |
Audio Beatnik Highly Recommended 2019; HIFI Sound Enthusiast Highly Recommended |