This amp is in good working condition. The serial number 5863 seems to date it to 1967. As you can see the physical condition is what I would call “been around the block.” These were called “the poor man’s Plexi” and for good reason, they are great sounding amps for Guitar or Bass. They are exceptionally well built and durable amps, hand wired point to point. The amp was gone through and had some caps replaced and given a clean bill of health several years back and has been used very sparingly since.

 

 

·       "The 1967 Traynor Bass Master, model YBA-1, is a 40-watt, all-tube amplifier head known for its rugged build and tone often compared to Fender Bassman and Marshall JTM45 designs. It was designed for both guitar and bass.

·        

·       Key Specifications

·       Feature Specification

·       Model YBA-1 Bass Master

·       Output Power ~40 Watts RMS

·       Electronics Type All-tube (handwired, point-to-point)

·       Preamp Tubes 3 x 12AX7A

·       Power Tubes 2 x 6CA7 (interchangeable with EL34s)

·       Rectifier Early Model Tube

·       Channels 2 Channels

·       Inputs 4 inputs (two per channel, high and low gain)

·       Controls Volume I, Volume II, Treble, Bass, Range Expander (Low/High frequency emphasis switch on some versions)

·       Reverb/Effects None

·       Impedance Typically 8 ohms output (designed to drive external speaker cabinets)

·       Construction Built in Canada with large Hammond transformers

·       Dimensions Approx. 27.25" x 16.5" x 9.75"

·       Weight Approx. 42 lbs

·        

·       Noted Characteristics

·       Tone: The YBA-1 is celebrated for a tone that blends characteristics of classic Fender and Marshall amps. It offers significant clean headroom and strong low-end response, making it a good platform for pedals.

·       "Poor Man's Plexi": Due to its similar circuit design to the Marshall JTM45, it is often nicknamed the "Poor Man's Plexi" and is a popular platform for modifications to achieve a British high-gain sound.

·       Durability: The amps are famously ruggedly built; the designer, Pete Traynor, reportedly performed quality control by dropping them off the roof.

·       Channel Jumpering: Guitarists often "jumper" the two channels together (using a patch cable between an output of one channel and an input of the other) to achieve a gritty, overdriven tone at high volumes. "

 

This IS available if this listing is still online. I am in the Culver City area.

 

Trades are always considered if you are in the Los Angeles area. Just let me know what you are offering in detail with photos if your trade item is not listed.

Shipping in the lower 48 USA is $150. I may issue a rebate to you depending on your location. I only charge what my cost for the label is.