Additional Details This optional highly flexible adapter, made with automotive grade parts, allows the use of Prima Extension cables also for AP F8.9 bit amplifier without the need for any soldering. It is compatible with extension cables AP 560 P&P IN, AP 560 P&P IN, AP 160 P&P IN, AP 560 P&P I/O, AP 560 P&P I/O, AP 160 P&P I/O.