Vocopro DA3700PRO Digital Karaoke Mixing Amplifier. No remote. Used By admin | September 5, 2023 Vocopro DA3700PRO Digital Karaoke Mixing Amplifier. 120W + 120W at 4 ohm max power output. 100W + 100W at 8 ohm max power output. 2 unbalanced microphone inputs.