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Review Summary
Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.
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4
EIAJ Test Standard, 1 kHz, 1% THD
4-channel mode:
4 Ohm/ch: 700W
8 Ohm/ch: 360W
mono-bridged mode:
8 Ohm/ ch Pair: 1400W
85 Vpeak / 65 Apeak
Universal, regulated switch mode
115 V / 230 V (factory selection) +/- 15%, 50 Hz - 60 Hz / < 26 ARMS
Idle
115V:
Power: 64 W, Current Draw: 0.6 A
230V:
Power: 62 W, Current Draw: 0.51 A
1/8 of max output power @ 4 Ohm
115V:
Power: 580 W, Current Draw: 7.48 A
230V:
Power: 580 W, Current Draw: 3.74 A
1/4 of max output power @ 4 Ohm
115V:
Power: 1066 W, Current Draw: 13.04 A
230V:
Power: 1066 W, Current Draw: 6.52 A
32 - 113 Degree F (0 - 45 Degree C)
Idle
115V:
Thermal Loss: 212 BTU/h, 53.4 kcal/h
230V:
Thermal Loss: 212 BTU/h, 53.4 kcal/h
1/8 of max output power @ 4 Ohm
115V:
Thermal Loss: 785 BTU/h, 197.8 kcal/h
230V:
Thermal Loss: 785 BTU/h, 197.8 kcal/h
1/4 of max output power @ 4 Ohm
115V:
Thermal Loss: 1249 BTU/h, 314.7 kcal/h
230V:
Thermal Loss: 1249 BTU/h, 314.7 kcal/h
32 dB, 30 dB, 28 dB, 26 dB, 24 dB, 22 dB, 20 dB, 18 dB, 14 dB, 4 dB, -Infinity, user selectable
10 Hz - 30 kHz (1 W @ 8 Ohm, +/- 3 dB)
>111 dBA (20 Hz - 20 kHz, A weighted)
>70 dB @ 1 kHz
1.34 V / 4.76 dBu
6 V / 17.8 dBu
10 k Ohm
< 0.05% @ 1/2 of full power
typ. <0.005% (<0.02% @ >0.1 W)
40 V/microseconds @ 8 Ohm, input filter bypassed
>5000 @ 100 Hz
4 LEDs per channel: 3 x green, 1 x red
2 status LEDs: 1 x green, 1 x yellow
1 stepped level attenuator pot per channel; mains switch
Dust filter foam behind front panel
4 x balanced Neutrik XLR female
4 x Neutrik Speakon NL4MD
1 x RJ45 with activity LED with 2 rotary address switches
2 x Pushbutton (stepping through bank of 4 presets)
2 x 4 LED preset indicators
1 x 2-pin Phoenix type MC 1.5/2-ST-3.81
IEC C13 16 A connector; AC mains cord with 3-pin plug 15 A for US, IEC Schuko 16 A for every other nation
2 x link switch, linking analog inputs 1 & 2
1 mm (0.04") steel chassis and steel removable dust cover, 3 mm (0.12") steel front panel, screw hole protection, steel side reinforcement & rear support
W x H: 19 x 1" (483 x 44.5mm)
RU: Depth: 14.1" (358mm)
16 lb (7.3kg)
700 W at 4Ohm from each of four channels with bridgeable pairs: a single M28Q is good for powering a complete little bi-amped stereo system, a 3-way mono stack of decent size, a variety of floor monitors.
All at a quality level as can be expected from Powersoft. Optimized for 4Ohm loads, the M28Q is a fantastic value, practically as well as commercially.
In use worldwide by leading touring and event sound companies, Powersoft amplifiers are preferred among the top ranking system designers, sound engineers, and contractors for providing reliable premier-grade power and headroom in the smallest possible package size.
Maximum efficiency warrants minimum current draw, heat dissipation and power consumption, resulting in "green" products, saving the user a substantial amount of money over time.
Equally versatile in both portable and installed system configurations and with its 4 channels delivering up to 2,800 W all neatly packed in one single rack unit weighing just over 7 kg / 16 lb, the M28Q is a flexible, cost-effective solution for small to medium sound systems.
Benefitting from core technologies of Powersoft's flagship K Series, the M Series sets a class standard in efficiency, leading to low power consumption, and consequently to substantial money savings on electricity, all in an eco-friendly way.
Minimum heat dissipation makes the M28Q suitable for hot or otherwise challenging environments.
Added the legendary sound quality thanks to Powersoft's unique, patented Class D output stage design, the M28Qrepresents a fantastic value, practically as well as commercially.
The M28Q comes with 4 years warranty and, like all Powersoft products, is entirely designed and made in Italy.
Features
Power supply
Advanced switch-mode power supply technology for high performance and compact size
Fixed frequency switch mode output
Patented output filter with ripple cancellation network
Protections
Fully protected circuit design with
Ac protection: shut down power supply when AC mains voltage is outside operating range
Clip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power output
DC protection: protects against infrasonic signal at the outputs
VHF protections: protects the loudspeakers against non audible, strong, non musical high frequency signals
Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits with automatic protection reset
Long term limiter: protects the loudspeaker against steady long term rms (non audio) signals reducing maximum output
Thermal protection: output stages operating temperature up to 75 Degree C (167 Degree F)
Temperature controlled continous variable speed fan, front to back airflow
General
Compact size - all models only 1 RU for reduced rack cost and space
Light weight - all models only 7.4 kg (16 pounds) for easier racking and shipping
Neutrik XLR balanced inputs with loop thru XLR and Speakon outputs connectors
Recessed stepped attenuators
Modular construction
Full four years warranty
Legendary Powersoft efficiency
Compact and space saving: 4 channels in 1 RU at 358 mm / 14.1'' depth
Green Audio Power: minimal "carbon footprint" and operational cost of electricity
Plenty of power, less weight: up to 2,800 W in 7.3 kg / 16 lb
Unique Powersoft technology for efficient, reliable performance
Switch mode power supply, internally switchable 230/115 V nominal
Fixed frequency switch mode amplifier output stages
Patented amplifier output filters with ripple cancellation network
Optimized for 4 Ohm loads, thus ideally matching real-world scenarios in targeted applications
Also available as M28Q HDSP+ETH with integrated DSP and Ethernet comm port.