Having owned more than a dozen different sound systems during my performing career, I can honestly say they all sounded good when I bought them. I, personally, consider the sound system the soul of the overall setup, while the arranger keyboard and mic is the heart of the system. Everything has to be balanced, matched, and tuned to perfection long before the entire package goes on the road. Not only does it have to have the power to handle larger audiences, it also requires the clarity and brilliance that is so necessary for the overall system to sound professional.

When Fran stated that a mixer would be a good idea, I completely agree with him. Especially when there is more than one vocalist involved.

Additionally, the quality of the mic(s) is of paramount importance. I'm always amazed at the number of performers that spend thousands on amps, but continue to use an old, beat up SM58 for their vocals. The depth and quality of that mic was great 30 years ago, but today, it's not even in the running when compared to the Sennheiser E-855, or the new Samson Q8. Both provide outstanding clarity and depth to anyone's vocals and I would highly recommend them to anyone who relies heavily on the vocal performances.

One more thought, don't forget that every venue has it's own ambiance, thus requiring varying EQ settings on both the keyboard and mixer. And, these settings can change as the crowd noise increases and more people gather in the room, absorbing some of the sound from your PA system. I no longer perform for audiences larger than 125 people, which means I no longer have to lug a heavy sound system around with me. But I have found there is a significant difference in overall sound when playing in the same room with a large, or small audience.

Lots to think about, and I hope the above posts will provide you with some assistance on improving your overall sound.

Good Luck,

Gary