The X350.5 is the natural progression of the X350. Changes include improvements to power transformers, paralleled high speed / soft recovery rectifiers, improved AC EMI filters, more paralleled power supply capacitors, increased supply RC filtering, refinements to the front-end input circuits, and the addition of single-ended Class A bias circuits for balanced single-ended Class A at low power levels.

All of these changes bring the X.5 series closer to the sonic signature of the XA series amplifiers.

The X.5 series feature the distinctive front panel meters indicating of the level of current running through the output stages that have long been the visual signature of X amplifiers.

The X350.5 accepts both single-ended and balanced inputs.

The X350.5 is rated at 350 watts per channel in 8 ohms.

Gain	30dB
Freq. Response	-0 dB at DC, -4 dB at 100 kHz
Power Output	350 watts maximum @ 1% THD, 1 kHz, 8 ohms
Output Voltage	Maximum plus, minus approx. 80 volts
Output Current	Maximum  plus, minus approx. 20amps
Input Impedance	22 kohm balanced, 11 kohm unbalanced
Slew rate	approx. plus, minus 50 V/uS
Output Noise	approx. 300 uV unweighted 20-20 kHz
Random noise floor	approximately 2 uV
Dynamic range	148 dB (random noise floor to peak output)
Balanced CMRR	approx. -70 dB @ 1 kHz (input common mode rejection ratio)
DC offset	< 100 mv
Power Consumption	600 watts idle, 1800 watts max
Dimensions	19"W x 11.5"H x 22"D
Weight	150lbs