Check the listing for details. IC-705 to XPA-125B AND Ameritron or other amplifier with RBI-12 buffer interface. Condition: New. Listed at 129.95 USD. This listing is for a ICOM IC-705 to key the XPA-125 AND a second amplifier* including RBI-12 buffered interfaceIncludes: Keying cable from IC-705 to RBI-12 input Keying cable from RBI-12 output to XPA-125B Keying cable from RBI-12 2nd output to RELAY jack on second amplifier ASK me if we can make a listing for different radio and/or amplifiers? We can also make a TWO input and TWO output interface with cables, ask me for a new listing for you! * The second amplifier can be any amplifier that requires a closure of contacts to activate it's internal T/R relay (Almost all modern Ham Radio amplifiers)The RBI-12 has ONE input and two outputs that are BOTH activated by EITHER inputThe RBI-12 is a protective amplifier keying buffered interface ONE radio keys TWO amplifiersHigh quality relay box to interface between any radio and will key any TWO amplifiers or noise cancelling device. Many newer radios can only provide for a small amount of current on the external amplifier keying output.In response to your requests for a relay interface box that will key TWO completely separate amplifiers, we have developed the RBI-12 .Do you have a need to key TWO amplifiers (perhaps a driver amp and high power amp) that have two different keying relay voltages? Our RBI-12 can (for example) key one amp with a 120 VAC T/R relay and your other amplifier that uses a 12 VDC T/R relay (or ANY voltage and current up to 240 volts ac/dc @ 5 amps for EACH amp). The keying circuits in our RBI-2 are COMPLETELY SEPARATE from each other and the radio is isolated. EACH output is a relay closure from center conductor of the RCA jack to the outside of the RCA jack. EACH output uses completely SEPARATE relay contacts!WHY use two amplifiers? Some users want to extend the life of their radio's expensive final transistors by running low power from their radio into an intermediate amplifier and have that amplifier run only what is needed to get full output from their higher power amplifier. Some users want to use an "instant on" amplifier for most contacts but still also have a larger amplifier what may require warm up time that is less frequently used. With our box, you do not need to reach in back to disconnect and reconnect each amplifier keying line. Some users have dedicated amplifiers for different bands and antennas and also don't want to to disconnect and reconnect individual relay keying cables Our box will draw