Whammerdyne Truth 2a3 Amplifier

Typical Measured Specifications

All measurements taken after 1/2 hour warm up time

Power Output
  • Power output, both channels driven at 5% distortion
  • 4.2 Watts RMS
Peak power output
  • 6.5 Watts per channel
Frequency Response
  • 1 Watt RMS -3 dB @ 6 Hz - 140 kHz
Wideband hum and noise
  • Input shorted, output into 8 Ohm load
  • <25 µV RMS
S/N Ratio @1kHz, just below clipping
  • 90 dB
Input sensitivity for full power
  • 1.3 V RMS
Gain
  • 14 dB
Gain match left and right channels
  • Better than .3 dB
Input Impedance
  • at 20 Hz: 30 K Ohms
Output Impedance
  • 4 Ohm, 8 Ohm
Dimensions
  • 11.8” W x 18” H x 18” D
Weight
  • 69 Lbs
Power Consumption @ 120VAC, 60 Hz line voltage
  • 111 Watts, 1.2 A
Features
  • The Truth™ is a non-inverting, zero feedback single-ended pure class A amplifier D/C coupled tube stage, with no capacitors in the signal path.
COMPONENTS/ CONTROLS
Vacuum Tubes
  • 1x 6DJ8 input tube (selected and factory tested)
  • 2x 2A3 output tube (selected and factory tested)
Compatible tubes
  • 2A3... JJ 2A3-40
  • 6DJ8... 6922, 7308, CCa, E88CC, E188CC
Front panel indicators and controls
  • 1x... Custom Simpson® plate current meter
    (L/R bias for 2A3, L/R bias for 6DJ8)
  • 2x... Custom Simpson® relative-power meters,
    (approx. 1 Watt RMS into 8 Ohms @ the start of the red marker & 3.5 Watts RMS @ full scale)
  • 2x... Independent coarse L/R stepped volume control,
    Rotary switch, 12-position: 0, -5, -8.75, -12.5, -16.25, -20, -23.75, -27.5, -31.25, -35, -38.5 dB, mute
  • 2x... Independent fine L/R stepped volume control,
    Rotary switch, 3-position: 0, -1.25, -2.5 dB
  • 1x... Main power switch, push button, w/LED “ON” indicator
  • 1x... Run - Calibrate switch
    toggle switch, 2-position
  • 1x... Rotary 4-position selector switch for current meter
    (L/R bias for 2A3, L/R bias for 6DJ8)
Rear Panel Connectors
  • IEC socket with integral 2 Amp Slo-blo 5x20 mm fuse - Littlefuse® 120 VAC 60 Hz line voltage
  • 2x... RCA audio inputs
    (left and right)
  • 6x... Speaker connection terminals
    (left and right - Common, 4 Ohm, and 8 Ohm)
WARRANTY
  • Parts and materials warranted for 3 years. Vacuum tube warranty, 6 months
Country of Origin
  • The Truth 2A3 amplifier is designed, manufactured, and tested in the United States of America.

Whammerdyne Heavy Industries
2827 NE Alberta St
Portland, OR 97211
Email: [email protected]
Phone: (503) 887-9015
whammerdyne.com

Download Owner's Manual