The wonderfully simple Manley Neo-Classic SE/PP 300B Monoblock Amplifiers directly heated triode is virtually Lee De Forest's very first evolutionary 3-element piece, comprising only filament, input grid and anode output. With its decidedly (and studiedly) 'retro' physical proportions - very deep front-to-back dimensions with a narrow side-to-side width, this layout closely follows concepts of a bygone era, where the well-conceived intention was to keep the power supply as far as possible from the hum and noise susceptible octal input tubes. Price is per pair.

• Vacuum Tubes: 2 x 300B (Output), 1 x 6SN7 (Driver), 1 x 6SL7 (Input), 2 x 5U4 (Rectifier)
• Output Power @ 1Khz with 5 dB FeedBack in SINGLE-ENDED: 11 Watts @ 3% THD
• Output Power @ 1Khz with 5 dB FeedBack in PUSH-PULL: 24 Watts @ 1.5% THD.
• Frequency Response with 5 dB FB in SINGLE-ENDED: 15 Hz - 15 Khz +/- 0.5 dB (measured at 5 watts)
• Frequency Response with 5 dB FB in PUSH-PULL: 10 Hz - 20 Khz +/- 0.5 dB
• GAIN SE Mode 0dB Feedback Setting: 30 dB
• GAIN SE Mode 10dB Feedback Setting: 20 dB
• Input Sensitivity with 5db FB SINGLE ENDED: 700mV for Maximum Power
• Input Sensitivity with 5db FB PUSH-PULL: 450mV for Maximum Power
• Input Sensitivity with 5db FB SINGLE ENDED: 165mV for 1V output into 8 ohms
• Input Sensitivity with 5db FB PUSH-PULL: 160mV for 1V output into 8 ohms
• S/N Ratio: SINGLE ENDED: 83.5dB Ref. 1W; 2.83v//8 ohms,20KHz BW; 5dB FB.
• S/N Ratio: PUSH-PULL: 85.4dB Ref. 1W; 2.83v//8 ohms; 20KHz BW; 5dB FB.
• Dynamic Range: SINGLE ENDED: 94dB Ref. 3% THD; 20KHz BW; 5dB FB.
• Dynamic Range: PUSH-PULL: 99.5dB Ref. 1.5% THD; 20KHz BW; 5dB FB.
• Input Impedance: 100Kohm, direct coupled.
• Optimum Speaker Load (switchable): 4 to 12 Ohm range appropriate for 4 & 8 ohm speakers
• 12 to 20 Ohm range appropriate for 16 ohm speakers
• Actual Output Impedance SINGLE ENDED: 2.25 ohms
• Actual Output Impedance PUSH-PULL: 1.86 ohms
• Damping Factor SINGLE ENDED: 3.5
• Damping Factor PUSH-PULL: 4.3
• Maximum Power Consumption: 240 Watts
• Mains Voltage Frequency: 50~ 60Hz
• * Power transformer factory set for 100V, 120V or 220-240VAC operation
• for original destination country's mains voltage.
• * Operating Mains Voltage changeable with power transformer re-wiring and fuse value change.
• Mains Fuse 100-120VAC operation: MDA 3 Amp SLO-BLO Ceramic Time-Delay fuse
• Mains Fuse 220-240VAC operation: MDA 1.5 Amp SLO-BLO Ceramic Time-Delay fuse
• B+ Fuse: MDA 400 mA SLO-BLO Ceramic Time-Delay fuse
• Badge Illumination: Units produced before 7/2003 use 8V, 0.3A "Fuse-Lamp" 1/4" X 1 1/4"
• Serial numbers after NSEPP314 use LED illumination which probably won't burn out
• Dimensions: W= 8.5, D= 23, H= 9 inches, Including projecting controls and parts
• Minimum Mounting Surface Dimensions: Feet Footprint = W= 7.5" D= 18"

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