I saw this “cyber” Monday special from audioMIDI.com: Nomad Factory’s Blue Tubes Trackbox for $15 (expires Sunday 12/6). I downloaded it to see if it might replace the TubeMP 12AX7 tube preamp I use between my banjos and audio interface. I use the preamp to soften the tone of the admittedly harsh piezo contact mics I use on my banjos. Driving the tube a little harder provides some welcome compression and the limiter helps tame the spiky sounds from a piezo on a frailed banjo.

In my initial tests, I’ve been pleasantly surprised with how well the TrackBox nails the tube sound–a little goes a long way. And the 4-band parametric equalizer seems eminently usable. Testing it as a VST in Max 5 it used about 7% of my CPU (an aging PowerPC G4) with all the bells and whistles turned on and was closer to 4% with only the tube and EQ running.

I’m not convinced I’ll leave my tube hardware at home just yet–without a hardware limiter in front of my audio interface I  have to drop the input level significantly to avoid clipping. By the time I’ve pulled the level back up I’ve also introduced some noise. The tone-shaping potential of the EQ and compressor might be worth it, especially if I need to travel light. In the meantime, it’s nice to have another channel strip color.