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The MA3501t Mono-Block 350W Audio Distribution Amplifier from SoundTube Entertainment is a high-output, low-voltage mono power amplifier engineered for use in distributed sound applications. Designed for use with SoundTube and other high-fidelity speakers, the amplifier provides 350W of output power into 4 Ohms and 225W into 8 Ohms. It offers taps for 25V, 70V, 100V, and bypass. A 12V trigger is provided along with automatic music sensing for remote on/off functions. The amplifier has dual RCA unbalanced inputs and a single Euroblock balanced input. It features a selectable limiter with a three-position subsonic filter.
Suitable for distribution of mono audio to speakers throughout a facility, the amplifier can be used in applications that include hospitality, corporate, retail, education, government, themed entertainment and more. The unit is powered via an internal 110 to 240 VAC power supply. The amplifier is housed in a powder-coated steel chassis that can be rack mounted in a 2U rack space. All controls located on rear panel-deterring unauthorized tampering with levels or other settings.
Efficient Class G high current mono-block 350W amplifier
Large toroidal power transformer and audio output transformer
Taps for 25V, 70V, 100V and bypass
Dual RCA unbalanced inputs and a single Euroblock balanced input
All controls located on rear panel
30 Hz to 35 kHz ±0.5 dB frequency response
3-position subsonic filter
Automatic music sensing
12V trigger for remote activation/deactivation
Overload, short circuit, and heat protection along with peak output protection
In the Box
SoundTube Entertainment MA3501t Mono-Block 350W Audio Distribution Amplifier
Limited 5-Year Warranty on Hardware
Limited 3-Year Warranty on Electronics
Table of Contents
MA3501T Class-G high current commercial audio distribution amplifier
350 W RMS, <0.1% THD @ 4 Ohms, 700 W peak
225 W RMS, <0.1% THD @ 8 Ohms, 400 W peak
20 to 100 kHz ±dB direct
30 Hz to 35 kHz ± 0.5 dB
Direct: 30 Hz to 65 kHz (+0, -3 dB)
Transformer: 30 Hz to 50 kHz (+0, -3 dB)
Dual RCA unbalanced and single Euroblock balanced
Maximum: 175 mV for full output unbalanced / balanced / variable
<0.05% 20 to 20 kHz below rated output power
>85 dB unweighted
20K unbalanced, 10K balanced
Soft Clipping Limiter (Switchable), Short Circuit/Overload, DC offset protection, Thermostatic variable speed fan cooling, Thermal overload protection, Transformer thermal protection, Over current protection
Front Panel Indicators
Power / Standby, Clipping, Protection LEDs
3 A @ 8 Ohms, 120 V
5.5 A @ 4 Ohms, 120 V
115 VAC 60 Hz @ 9 A maximum
230 VAC 50 Hz @ 4 A maximum
UL 60065 Listed, CCC, CE, RoHS
Dimensions (H x W x D)
3.50 x 19.00 x 13.75" (88.90 x 482.60 x 349.25 mm)
3.75 x 19.00 x 13.75" (95.25 x 482.60 x 349.25 mm) including feet
29.5 lb (13.38 kg)
SoundTube Entertainment MA3501t Mono-Block 350W Audio Distribution Amplifier Review