Hi Rich.
If you go to -
www.rctankelectronics.com
click on "store" and you will see the "TPA DEAL" which consists of a
"Sound board", (Which Fits onto the IBU2)
2 Volume controls,
2 Visaton FR7 speakers.
total cost,£45.00 or $67.77
I promise you won't listen through a HENG LONG speaker ever again.
shaun.