I listened to a Delta-SX (150-174) with an S-550 head on three different speakers-the Delta, the Ericsson and the Mastr Pro. The Mastr Pro gives the best results but the audio quality is not up to snuff with the MVS. It has lower
in tone and not as clear. There is also noticeable hum on signals which are
accompanied by PL tones. This is not the case with the MVS. There must be
something out of adjustment as this is supposed to be a top notch radio. Any
ideas? Thanks, paul14513