I have been very pleased with my first generation GR Bass AT 212 Slim cabinet. I initially hooked it up with a Mesa TT-800 but found that setup to be top heavy due to the ultra light weight of the carbon fibre cab. I then bought a used Quilter BB-800 off TB and it was much more stable due to the smaller footprint and lighter weight. Together they have that open and very clear sound that everyone speaks about.
More recently I have received two custom made GR Bass AT 212 Slim combos. The amp is a One800 with 800 watts going into a modified 212 Slim cabinet. The combos have the updated GR badge and cloth grill, which helps offset the additional weight of the amp and help keep the entire unit as light as possible around 33.5lbs. All my fretless uke basses sound great with the 'Pure' switch activated, which bypasses all the tone controls. I am currently trying to find a way to slave one combo from the other, but so far no dice. Luckily I ordered the combos before the price increase. The new cost of the 212 Slim cab is getting mighty close to the price of one of the combos!
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