Mr. batenet
The Inter-M R-500 phone in the US http://www.inter-m.net/_upload/product/2/R-150PLUS_dw_ae.pdf is not responding (not connected). I'll try the S. Korean when time will be proper.
I'm still waiting to your answer about the 10 amp's configuration.
I'm a bit baffled from this £275 amp, with 500W/Ch. In 8 ohms bridged, designed in S. Korea and made in China. The 10 sets of DIY 0 AWG may cost you close to the price of the amplifiers!