Check the listing for details. Phil Jones Bass Compact Plus Bass Amp Combo Red Refurbished. Condition: Excellent - Refurbished. Listed at 1231.99 USD. The Phil Jones Bass Compact Plus BG-450 bass combo amp packs a powerful 500W punch in a remarkably compact and lightweight design. With Phil Jones Bass' proprietary chrome dome drivers—the most efficient 5" speakers they've ever engineered—you get an incredibly punchy and focused bass tone that cuts through the mix. The BG-450's Class-D power amplifier delivers efficiency for lower weight, while its Class-A preamp provides ultra-low noise, combining to give you a massive tonal range when you dig in. The single channel input has variable gain to match passive or active basses. Dial in your signature tone with the classic 5-band EQ. Send your tone through effects in the amp's FX loop, blending it back with the original signal.