A/B 2 Channel Amplifiers / A Series High voltage RCA input (up to 17V), bass boost, gold plated bus bars, gold plated input and output terminals and built in crossovers. The technology is definitely inside. The A series amplifiers incorporate the use of high power overwrapped torroidial coils along with large heavy duty power capacitors and a protection circuit that will ensure that your A series amp keeps playing on and on! Features 4 Ohm Mono / 2 Ohm Stereo stable Bass Boost Built in crossover Thermal / Short Protection High Power Torroidial Coils Heavy Duty Power Capacitors Gold Plated Input/Output Terminals Soft Remote On/Off Circuitry |