The original AND best as invented by Jim Marshall ! Ideal for your JVM410H ! Marshall 1960A 4x12 celestion loaded G12T-75 speakers is the all time classic cab. To ensure ultimate flexability the cab is switchable between mono (4 or 16 ohms) and stereo (8 ohm per side). The two mono impedence options provide extra amp matching capabilities, while the cabinets stereo capabilities make them ideal for rack systems which run in stereo.