My GB Streamliner 900 is up for sale. It's great. No issues. It sounds as good as it did when I bought it. It was serviced by Agedhorse/Andy last year. That service included some updating. I've not used them much since having service done, if you're wondering. If you haven't heard these awesome amps, they offer tons of headroom, simple interface, a HUGE bottom end, warmth in a very smooth and rich tone. There's a lovely glassy top end available, which you can dial down for old school sound. details at the gb website: Streamliner Series | GENZ BENZ