Combined constant voltage power amplifier OM-70/150/180/250/300/350/550/650

Combined constant voltage high power amplifier OM-800/1000/1200/1500/2000

Bluetooth/MP3/radio combined constant voltage power amplifier OM-70B/150B/180B/250B/300B/350B/550B/650B

Bluetooth/MP3/radio combined constant voltage high power amplifier OM-800B/1000B/1200B/1500B/2000B

Six-partition adjustable combined constant voltage power amplifier OM-70R/150R/180R/250R/300R/350/550R/650R

Bluetooth/MP3/radio six-partition adjustable combined constant voltage power amplifier OM-770F/7150F/7180F/7250F/7300F/7350F/7550F/7650F

Bluetooth/MP3/radio six-partition adjustable combined constant voltage high-power amplifier OM-7800F/71000F/71200F/71500F/72000F