Unit was tested with a passive Fender split-coil P-bass pickup, Precision bass and 4 month old Fender flats. Both volume and tone at 10. Only one unit was tested, so no comments on the "chaining" ability.
First the good:
Now the bad:
- As expected from Yamaha, the build quality looks very good. Feels substantial. All knobs and pots function well.
- Unit is simple to use, the two knobs on the left affect only your sound. The two on the right adjust the sound from the others.
- With bass only, the tone is nice and "bassy", plenty of volume.
- Tone gets a bit distorted at higher volumes. Not terribly so, but a noticeable amount.
- Adding the AUX input using my phone playing mp3 files reveals a problem. I cannot hear myself. Adjusting everything does not help other than turning the Aux down very low. At that point, it's barely usable. Comparing this to my other headphone amp, the bass signal from the Yamaha is too "bassy". There is no tone adjustment. I cannot bring the bass guitar up "out of the mix", which I believe some treble and mids would do.
Very disapointed. Returned it for a refund.