When desired, I can get overdrive/distortion from mine, but I get great cleans, too, using it in various rock/pop/jazz fusion/prog-rock bands since I got the Aguilar over 5 years ago. Choice of speaker cabinets is key to getting what one wants from any amp, along with instruments and playing styles/technique.If you get the Tonehammer you'd better like distortion. I sent mine back the same day. It sounds a lot like an overdriven tube amp. Clean sounds it does not do. I hated it.
For cleanest tones crank the Master control with the Gain control FCCW than add as need for volume level required. Keep the Drive control down unless added overdrive is desired. The latter control can also be used to provide a bit of a more vintag-y sound as it gently rolls off the frequency extremes the more the Drive control is turned up. With the Gain control FCCW the Drive control does not add distortion, just the frequency extremes reductions. Once the Gain control come into play along with the Drive control then varying amounts of overdrive can be achieved.