In order to drive a stereo pair of coaxial drivers in a bi-amped manner, we are looking into 4-channel amplifiers with built-in DSP.

A selection of what have tested:

• t.racks DSP 4x4 Amp 4.250, 4 x 250W @ 8Ω, ca 425€ – we have looked into it more closely
• Next audiogroup A504 DSP, 4 x 250W @ 8Ω, ca 940€
• Audac SMQ 350, 4 x 350W @ 8Ω, ca 1150€
• Yamaha PC406-D, 4 x 600W @ 8Ω
• Lab Gruppen PLM 5K44, 4 x 1250 Watts @ 8Ω

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We are currently testing Hypex amp and DSP modules for a DIY design, see Section "Hypex modules based DIY amp".