Audio Research REF 110 or Ref 75

Vdosc,
Are these the correct specifications for your speaker?

Nominal impedance: 4 ohm
Woofers: 2 - 8 inch
Midrange: 1- 7 inch
Tweeter: 1 - 1 inch inverted titanium dome
Sensitivity: 92 dB (1 watt @ 1 meter)
Minimum Amplifier Power 7 watts per Channel
Weight: System Net: 324 lbs
Frequency Response: 21 Hz - 21 kHz (-3dB)

Yes, that is correct

Its a tough choice because both pieces are very good, but there is still room to upgrade. If it were my choice, I would go with a new amp if I thought I didn't have enough power, or some other issue with the amp that you know you don't like. If you have no issues with the amp, a new preamp will usually make a bigger difference. Either way, you should seek more input. I have a lot of experience with your amp, but not so much with your preamp. Given that, I can't make a fair comparison. Overall, you have a very well matched system. Wilson/ARC go very well together if done right. Are you working with a dealer? That would be a big help.

Vdosc, take a look at this Wilson Watt Puppy 6 review. Just above the section titled "Comparison" is a comment from Dave Gordon at Audio Research that talks about using the 8 ohm tap on the amp even though the speaker is 4 ohm. Even if you decide to get a new amp, it appears the speaker/amp combination may be best using the 8 ohm tap.

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Zd542, Lak & Vdosc, Would a subwoofer be a possible solution
in this scenario?
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