Through a single guitar i can get a huge variety of sounds just working on channel volume, variwatt, master volume and x-gain combination settings.X-gain allows to achieve a great sustain.Overall you can get an amazing tone even at low volume.

The build quality and sound quality are unbelievable. This mans knowledge of guitar amplification is amazing and he stands behind his product better than anyone. He has modded amps for me and built amps that are true works of art both visually and audibly. You simply cant go wrong with a Granger amp.

Working with Kurt to achieve the amplifier that I wanted was a great experience. Though I am not a Professional Musician he treated me with the courtesy and professionalism I expect he would give a working musician. If you are looking to have an amplifier that will simply AMAZE you from the first time you fire it up, see Kurt.

Ive had Curt repair or mod several things for me, both guitar and organ related. Great work and attention to detail, and things dont sit around. Very prompt service.

Well, curt built me a GNR 100 watt beast about 7 months ago. What can i say, no regrets its everything i thought it would be. Its my main amp, it does just about everything very versatile . It covers 60s, 70s, 80s rock even 90s. Curt you know your stuff THANKS

I trusted Granger Amplification with refurbishing the 1961 Fender Showman I inherited from by Father. I was leary leaving the amp with someone Id never met, so I drove quite a ways to meet Curt face to face and hand him the amp. He wound up being everything I look for in an amp tech. Hes experienced, intelligent, honest AND A GREAT GUITARIST. He dialed the head in perfectly! My head was finished within the time he promised, it was reasonably priced and it sounded awesome. Its a beast! A great pedal platform. Some amp techs specialize in, say Marshalls, and little else. And theres nothing wrong with that. But Curt took a vintage Fender Showman, that had sat idle for over 20 years and made sound better than it ever did before. I would DEFINITELY endorse Curt to anyone who is concerned with getting the best out of their amp. Hes does meticulous work. Hes the real deal.

Granger is my go to place for valve amp repair and custom built guitar and bass amps. Always been impressed with the quality, honesty and fair price.

I really like this company. Great products and Curt seems like a really nice and genuine guy.

Effects loop system works great in lots of different kinds of amplifiers my favorite aftermarket effects loop

Delivered a pedal I bought from him and I also use one of his pedal power supply filters for an older chorus pedal to reduce hum. The free hot sauce was a nice touch.

I loved the fact that when I called, I spoke to the man actually building the amp and he couldnt have been any nicer and helpful. Curt is a true pro.

Curt is a master amp builder and great guy.

Best amps at the best price