300 Watt Tube Bass Head


The all-tube Traynor YBA300 300-watt bass head has been designed from the ground up to be the ultimate high-power head for the working musician. Built for unmatched reliability in real world heavy-use touring environments, the designers of the YBA300 understand how important it is to make sure your amp is ready for action every night.

Highly effective and straightforward tube bias adjust with clear and concise LED display ensure any player can easily adjust pairs of the YBA300’s power tubes without fear. LED indicators on the rear of the amp show proper tube function and status. In rare cases where a tube may fail, the YBA300 will lock out the problem tube and its partner, allowing the amp to finish the show on the remaining active tubes. LED display clearly shows which tube needs service.

The stock YBA300 ships with twelve hand-selected and tested 6L6 power tubes, delivering a truly classic hi-fi smooth tube tone. For players looking for a more aggressive bass sound, the stock 6L6 tubes can be easily changed to any high quality EL34 tube set and be rebiased in the field, making the YBA300 essentially two amps in one versatile chassis.

  • 300 Watt All-Tube Bass Amp
  • Delivers Maximum Power at 2 or 4 ohms
  • Comes Stock with 3 x 12AX7, 1 x 12AU7 and 12 x 6L6 Tubes
  • 6L6 Power Tubes Can Be Swapped for EL34 Tubes for Different Amp Character
  • Individual bias adjust with indicator LEDs for Output Tubes
  • Tube Lockout for each Pair of Output Tubes removes damaged tubes from signal path allowing amp to continue operation in emergencies
  • Gain, Bass, Sweep-Mid, Treble and Master Controls
  • Deep, Bright, Resonance Tone Shaping Controls
  • Pre/Post EQ DI Output, Effects loop, Tuner Output
  • 1/4-inch and Speakon™ Output Connectors
  • Made In Canada
Power @ min.  impedance (Watts) 300 @ 2/4 ohms switchable
250W into 8 ohms
Minimum Impedance (Ohms) 2
Frequency Response (Hz +/-3dB) 30 – 16,000
Hum and Noise (dB) -90db
Inputs 1/4-inch (Passive 0 dB, Active -6 dB)
Channel 1 – Inputs 2 x 1/4inch
Channel 1 – Controls Gain
Master Volume Control Yes
Main Tone Controls Treble, Mid, Frequency, Bass
Input Sensitivity (mV) 20
Master Outputs Pre-amp out (Pre Master)
Line Out (type / configuration) XLR Balanced (Pre/Post, Grnd Lift)
Line Out Sensitivity (Vrms) 200
Effects Loop / Location Pre-amp out, Power Amp in, Loop Thru
Effects Return Sensitivity (Vrms) 1
LED Indicators Power/Standby
External speaker output / location 2 x 1/4inch, 1 Speakon (Rear)
Other Features Bright, Deep & Resonance Switches
Impedance Selector (2/4 ohms)
Tubes 3x12AX7, 1x12AU7, 12x6L6
Tuner Output 1/4inch
Dimensions (DWH, inches) 11.5 x 24 x 10
Dimensions (DWH, cm) 29 x 61 x 25.4
Weight (lbs / kg) 51 / 23
Specifications subject to change without notice