The SPA550 kit is considered as the "normal" amplifier choice for most HiFi woofers. It produces 2 x 220W at 8Ω and 2 x 350W at 4Ω. It contains a set of Ground Sound modules to build a high performance amplifier. There is a bit of wiring, but pretty easy to do and all the nessacary wires are included. The wires has to be soldered as we rely mostly on soldered joints - which will perform for a very long time. The AmpC modules makes the amplifier smooth running at power on and off. The Transformer is custom-made and has sufficient power for two PA3CC modules. The PSU8DB is the "battery" of the amplifier - it has dual bridge rectifiers to lower the noise of the power ground and giving better conditions for the transformer. The PA3CC amplifier modules has very good sonic qualities, which several of our customers has discovered. Our amplifier modules are Class AB, but the bias current is low and at normal operation level they produce comparable heat as a Class D. For this reason you don't have to build the amplifier around a huge heat sink...

• 2 pcs. PA3CC - Power Amplifier module 100W
• 1 pcs. PSU8DB - Power Supply
• 1 pcs. AmpC - Soft Start and mute control
• 1 pcs. TR550VA - Toroidal Transformer 2 x 50Vac
• Wires for all internal connections