"Purring Look, Roaring Sound" Vintage Guitar     |     "If you relish the prosepct of jumping from the sound of a Blackface Deluxe (without reverb) to a high gain Marshall short stack with all the dimensional bloom and harmonic character of a hand-wired tube amplifier, the GR 1.6 performs this nifty trick better than just about any amp we have ever reviewed." Tone Quest Report     |     "This is an extraordinarily toneful amplifier created with an equally extraordinary voice, feel, and attitude." Tone Quest Report     |     "The GR 1.6 seems hard wired to the volume pot on your guitar in a very unique and "right way." Tone Quest Report     |     "The chassis is a work of Art - The thickest chunk of aluminum we have ever seen in any amp, and the handwired detail is equally impressive..." Tone Quest Report     |     "We were pleasantly surprised with the amp's aggressive, crunchy overdrive. Given the amp's laid back appearance, we were expecting the amp to purr like a kitten, but what we got was a roar!" Vintage Guitar     |     "This amp is something different, something special. If a Trainwreck was the sound of the 90's, this amp is the sound of the future." Kenn Mogel     |     "The question should be more like "What kind of sounds can't this amp make". The amp is extremely responsive to your playing style and the dynamics as well." Kenn Mogel





















 

 
 
 

We offer the highest performance, most versatile sounds, and best playability of any vintage or modern combo amplifier in our power range. We offer the guitarist this exceptional design which excels at all styles of guitar music. Whether you express yourself in a "Weekend Warrior" Rock band, a refined Soul ensemble, a Modern Rock barrage, a smooth Top 40 band, a grinding Blues quartet, or are a Nashville session player, this is the perfect amplifier for you. You can experience the wonderful

"feel factor" and incredible range of tones available in our design available only from JCA Circuits.

The JCA Circuits GR 1.6 is so versatile that it can easily replace a small fleet of medium powered combo amplifiers. The GR 1.6 is capable of delivering the very best examples of classic tones of several desirable amplifiers. The GR 1.6 conveys a truly "Thicker than Blackface" Clean sound. It also grinds like a classic "Tweed" amp with more "In Your Face" presence and dynamics on tap if that’s what you’re after. It can also be set up to give one of the most unexpected and best sounding "Plexi" style lead tones available anywhere. Amazingly, it is also easy to dial in a Clean British style chime too. The GR 1.6 amplifier is able to achieve any of these tones with the greatest of ease and has the ability to do it without compromise. The sounds and feels generated by the GR 1.6 simply have to be experienced. You have discovered the ultimate in guitar amplification systems with JCA Circuits Amplifiers.

Please use the links at the left to learn more about the GR 1.6. Should you have any questions, we are always happy to help out. Please email us or call us at (610) 323-4342 or (484) 942-6004. We are confident that once you plug into the GR 1.6 Amplifier, you’ll never settle for anything less than the best!
 
     
Read the review of the
GR 1.6 Golden Ratio Amp in
Vintage Guitar Magazine
  NEW!    Read JCA Circuits'
Builder's Profile in
Vintage Guitar Magazine
Read the review of the
GR 1.6 Golden Ratio Amp in
The Tone Quest Report
     
Check out reviews of the GR 1.6 at
Harmony Central
  Read about us in this
Pottstown Mercury Newspaper Article


 

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