Never thought I would see the day when my Acoustic Image amp would be put in second place. Specifically, because my main basses are Turner fretless piezo and no other amp has come close to the AI for the true sound of the Turners. The TC is just more of everything while retaining the clarity of my bass. Amazing. I am still using the AI speakers which I love for both sound and how small they are. However, they are 4 ohms so I can only use one directly. However, a great use for the AI is as a power amp only so I can use the TC for tone and the AI for powering two speakers if I need it. I play small venues so one speaker is almost always enough. It is great to make a purchase and be so happy with it.