Roland Bolt amplifier
The Roland Bolt 30/60/100 was the only line of tube guitar amplifiers produced by Roland. The amplifier was launched in the market in 1979 when the Roland company was trying to pursue the success of the Mesa Boogie Mark amplifiers.
Properly speaking these are hybrid amplifiers, the pre-amp being built with solid-state circuitry. The built-in solid-state distortion channel provides an amazing amount of diversity with this amplifier.
Aside from the overdrive circuit, the amp contains a spring reverb, and provision for external effects loops and switches.
The Bolt was produced until 1984: Roland made a decision at that time to focus production on solid state amplifiers such as their very successful Jazz Chorus. Collectors of vintage amplifiers, along with Guitar Tone Addicts, are constantly in search of these amps (most especially the Bolt 60's), and with their production numbers having been so very limited, have paid in excess of over $1,000 dollars for the Bolt 60 and the Bolt 100, respectively. To locate one for purchase has become extremely rare, to the point of almost impossible. And, to find one that is completely original brings a very hefty price, when attempting to purchase. These are amplifiers of amazing quality, durability, diversity, and reliability, and collector know this. Those whom have plugged their guitars into these amplifiers know it as well. Mesa and Marshall recognized the quality of these amps as well, as stated in many of the 1980's Guitar Magazine publications. Mesa manufacturers were quoted as saying that "the Roland Bolt Series was as close to being a Mesa as could be possible, without having the Mesa Logo on the front!" The search and interest in these amplifiers continues to increase, as 'the secret' about them is being shared by 'Tone Addicts', owing to their amazing tone, their original affordability, their comparison to other Vintage Classic Amplifiers, and the Roland reputation of producing some of the highest quality musical gear in the industry.
Both combo (amp/speaker) and 'head' versions of these amplifiers were produced. The combo amplifiers are often found (as in the illustrated example) with replacement speakers, as these units were used so often and frequently on gigs, and in recording sessions, that the speakers would simply wear themselves out. To find a Roland Bolt combo with the original speaker is actually quite rare, if not almost impossible.
- Roland Bolt 30/60/100 dedicated webpage