The Dean Markley K-20X amplifier is not selling at Retrevo any longer.
Customers who are shopping for a amplifier today are looking at the following popular models.
Pyle PEXA5000 Amplifier - 2500 W RMS - 2 Channel (5000 W PMPO - 10 Hz to 50 kHz)
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Aphex Headpod 4 High-Output 4-Channel Headphone Amplifier
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Behringer BX108 Amplifier - 15 W RMS
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