ZoneMaster® ZM2350
600W of Clean Power for Subs, Garages & Long Cable Runs
Drop the ZM2350 into your system and everything feels effortless—passive subs hit harder, outdoor zones stay clean over long cable runs, and the whole presentation tightens up without bulk or heat.
In a rack‑friendly 2U chassis it delivers 350 W x2 into 8 Ω (600 W x2 into 4/2 Ω), adds a Subwoofer Mode with an 80 Hz analog low‑pass for passive subs, a switchable 30/80 Hz high‑pass to protect small speakers, and a speaker‑level input for easy integration when your AVR lacks pre‑outs.
Praised by reviewers
- “The ZoneMaster 2350 amp is the real thing… highly recommended.” — Audio Beatnik, May 2019.
- “Impressively, for the specs and the price, the ZoneMaster 2350 is a great performer.” — HiFi Sound Enthusiast.
Power Output
RMS, Both Channels Driven (20 Hz – 20 kHz)
350 watts x 2 @ 8 Ω
600 watts x 2 @ 4 Ω or 2 Ω
Minimum Speaker Impedance (Output A+B)
Stereo or Mono Mode: 2 Ω
Subwoofer Mode: 4 Ω
Note: Operation at these minimum impedances might require additional ventilation.
Frequency Response
10 Hz – 70 kHz, +0/-3 dB
20 Hz – 20 kHz, +0/-0.8 dB
Total Harmonic Distortion
< 0.05 % at typical listening levels
< 0.9 % at full power
Inter-channel Crosstalk
70 dB at 20 kHz
Input Sensitivity:
2 Volts = Full output (350 Watts @ 8 Ω)
Total gain = 29 dB (Level controls set to Maximum)
S/N Ratio
> 100 dB, input shorted, unweighted
> 114 dB, input shorted, IHF A-weighted
High and Low Pass Crossovers
Sub Mode and Sub out jack: 80 Hz, 24 dB per octave
High Pass Filter: 30 Hz or 80 Hz, 12 dB per octave
DC Trigger Requirements
+9 Vdc to +12 Vdc, 5 mA
Audio Trigger Requirements
2 mV audio signal (8-15 minutes turn off delay)
AC Power Requirement
1500 Watts maximum
100 Watts typical (music playing, typical listening level)
30 Watts idle (no music playing)
0.5 Watts in standby
110-240 VAC 50/60 Hz
Dimensions
Width: 17.25" (438 mm)
Depth: 14.5" (368 mm)
Depth: 16.25" (412 mm) with cables connected
Height, with feet: 4.25" (108 mm)
Height, without feet: 3.5" (89 mm), 2U
Weight
Net: 15 lbs. (6.8 kg)
Shipping: 22.25 lbs. (10.1 kg)
- 350 watts x 2 @ 8 Ω
- 600 watts x 2 @ 4 Ω
- 2 Ω stable for driving multiple speaker pairs
- Two pairs of speaker outputs with A/B buttons
- Lockout switch on rear panel to disable A/B buttons
- High pass filter, switchable for 30Hz or 80Hz
- Automatic on/off by 12V trigger w/ looping output
- Automatic on/off by audio signal
- Speaker level input enables integration with systems lacking preamp output jacks
- Parasound designed class AB input stage w/ premium Class D power stage
- Subwoofer mode for driving multiple in-wall subs without the need for an external crossover
- Mono mode combines L and R for single speaker applications
- Mono full range preamp output
- Subwoofer 80Hz, 24dB/oct. low pass preamp output
- Looping left and right output jacks
- Left and right input level controls
- Efficient, low heat design
- Short circuit and overload protection
- 0.5 watt standby power consumption meets EU and Energy Star requirements
- 2U rack mounting hardware is included in box
Audio Beatnik May 2019
"The ZoneMaster 2350 amp is the real thing [...] highly recommended. You will get much more than you think you paid for."