SERIES ONE 412A & B The oversized vintage Blackstar cabinets are built to the highest standards using the finest materials. Every care has been taken with the design of these cabinets to ensure that they produce the best possible sounds and will really last a lifetime. ? 240W extension cabinet ? Switchable mono 4? or 16? / stereo 2x8? ? Fingerjointed birch plywood construction ? Handwired with heavy gauge wire ? Celestion Vintage 30 loudspeakers