Manley Labs Neo-Classic 300B Preamplifier RC

Manley Neo-Classic 300B valve preamplifier
Rear panel of Manley's Neo-Classic 300B
Manley Labs present the 300B Neo-Classic preamp
Manley Labs Neo-Classic 300B Preamplifier RC

Lauded as the first and only preamp to feature classic 300B tubes, the Neo-Classic series 300B RC preamplifier is Manley’s self-proclaimed ‘most esoteric’ product to-date.

£8499.00 inc VAT
ETA 1-2 WEEKS
SKU MAC-NEO3BR
EAN 89083300069

  • 2x 6SL7 Sovtek input tubes
  • 2x 300B Electro-Harmonix output tubes
  • 2x 5AR4 Ruby rectifier tubes
  • 2x OD3 regulator tubes
  • 5x stereo inputs (unbalanced RCA)
  • 2x stereo outs (unbalanced RCA)
  • Dedicated record and headphone outs
  • Switchable Mute function
  • Headphone impedance switch (30-400 / 300-4k Ohms)

While Manley’s historical use of the 300B tube has been most prominent in small power amp models, their specific voltage swing and power level makes them a terrific match for headphone amplification purposes. This, combined with their smooth and natural sound made them Manley’s obvious choice for a next generation line-driving preamp.

Running in tandem with the two output tubes are large octal 6SL7GT triode tubes, all operating in pure Class-A mode. The implementation of tube rectification and regulation for the Neo-Classic 300B’s high-headroom power supply perfectly complements the retro feel of its circuit siblings.

Intelligent Ripple Rejection

Developed from scratch by Manley Magnetics, Neo-Classic 300B’s ripple rejection circuit is a new component designed to intelligently filter out power supply noise. The result during operation is a stunningly clean preamplifier performance which gels particularly well with the requirements of discerning headphone listeners.

Volume can be adjusted with a true audiophile ALPS potentiometer which perfectly matches the rich quality of the Neo-Classic 300B’s line driver, while under the hood high purity silver wire, extra thick copper and plated PCBs, custom Manley Magnetics designed output transformer modules and gold-plated RCA connectors all combine to deliver the cleanest audio path possible.

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Manley's Neo-Classic 300B RC preamplifier

Gain Factory set at 12 dB at max Volume
Noise Floor -70 dB (1 Hz - 100 KHz)
S/N Ratio 105 dB (A weighted, 20 Hz - 20 KHz)
Frequency Response 5 Hz to 50 KHz @ 1dB
THD 0.08 % @ 1KHz at 1V RMS out
THD+N -80 dB (0.01%)
Input Sensitivity 250mV (-9.8dBu) yields 1V out
Input Impedance 100 kOhm Noble volume control
Max Input 5.5dBu or 1.459 Vrms @ 1KHz
Output Impedance 100 Ohms (Line)
Max Output 17.2dBu or 5.636 Vrms @ 1KHz
Dimensions 483 x 330mm (WxL), 12.7kg