Description

You ready to lay the boom?? Late 60s/Early 70s Traynor YBA-1A Bass Master MKII 09 Watts RMS Tune head- amazing for bass AND guitar. $749

A powerful Canadian-made tube amplifier head from the early 1970s, the Traynor YBA-1A Bass Master Mark II is known for its loud, raw tone and excellent suitability for both bass and guitar when pushed into saturation.

Type
Tube Amplifier Head

Model
YBA-1A Bass Master Mark II

Manufacturer
Traynor

Country of Manufacture
Canada

Year of Introduction
Early 1970s

Controls
Volume (Normal), Volume (Bright), Bass, Treble, High Range Expander (mid boost switch)

Input
2× 1/4″ instrument inputs (Bright and Normal channels)

Output
1× 1/4″ speaker output jack (4 or 8 ohms depending on impedance selector)

Power Supply
Internal (standard IEC AC cable)

Notable Features

  • Power Amp: 90 watts RMS via two 6550 power tubes for extremely high clean headroom or powerful overdrive

  • Preamp: Tube-driven with gritty breakup when pushed

  • Tone Stack: Passive EQ with responsive bass and treble controls

  • Build: Sturdy steel chassis and point-to-point hand wiring in a rugged enclosure

  • Use Case: Originally a bass amp but favored by guitarists for high volume, thick overdrive, and vintage tube tone comparable to early Marshalls