The M-500 has evolved from the original design in 2002. Over the years we have made numerous improvements to boost performance. We redesigned a more efficient power output stage and lowered the operating temperature of the output devices with our custom tooling of the power amplifier heat-sink assembly. Higher efficiency and lower operating temperature yields great benefit to the longevity of the M-500. It will run for decades. A new circuit is added to allow the cooling fan to operate only when needed, so it works in the studio without ambient noise from the fan.

The M-500 is a single one channel power house with ultimate tone shaped by the 12-band graphic EQ and 3 band parametric EQ. It can power multiple speaker cabinets with ease. Our exclusive optical limiter circuit gives it a very smooth operation. Bass Player magazine in 2004 review quoted it "the best on board limiter found in a bass amp". 2% silver solder connections; 2.5 mm steel chassis; heavy duty chrome plated corners; recessed Allen bolt mounted handle; custom machined metal and anodized aluminum knobs; and much more. No details left unattended; and they scream quality.


Power Output (RMS)
720 W/2Ohms, 480 W/4Ohms, 280 W/8Ohms
12-BAND Graphic EQ
2x Input (Passive, Active), Line-In, Volume Pedal, Headphone
2x Speaker Out(8O/Speakon), 2x Preamp Out, D.I. Out(GND Lift SW, Pre-Post)
COMPRESSOR & LIMITER with On/Off Switch, FX Send/Return
120 or 240V AC
Dimensions (WxDxH)
407 x 318 x 140mm (16.02 x 12.52 x 5.51")
41 lbs (18.60kg)


Brand Phil Jones Bass

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