Line 2CHT was the one I got quoted a little more than the standard because of the HT bypass.The specs are:
includes the PS 2C power supply, tubes, line cord, and power interconnect cable. The Line 2CHT will have 3 line inputs, with Input 3 being your HT channels. The selector switch position next to Input 3 is labelled HT and it bypasses the Input 3 signal directly to the output jacks, of which there are two pair. You can power off the PS 2C when in HT mode. There is not a "REC" output on the HT model.