The TBDD is a modern implementation of Roland’s classic SDD-320 stereo chorus, the Dimension-D, in dual 500 series format.
As with everything we build, we strive to preserve the function and sonics of the original which we fell in love with it in the first place, while updating the hardware with modern components and construction techniques to improve reliability, performance, and functionality. To this end, the circuit follows the original Dimension-D very closely. We use NOS analog BBD chips (exactly the same as the original). We have added useful things such as the onboard wet/dry blend, optional relay bypass (the functionality of the “Off” button can be selected via a jumper), and high quality THAT Corp. balanced line receivers and drivers.