I'm also thinking buying another pair of speaks for $600 will not make much difference from the current PSBs, if this model PSB sounds like others I have heard.
If the CD has a digital output, an outboard DAC might be the best investment for $600. An mhdt Paradisea can be had for under %500 and make a real difference in the sound.
If she's using a stock RCA interconnect between CD and receiver, maybe upgrade that to a decent Audioquest or similar IC for under $100 also.
If the CD has a digital output, an outboard DAC might be the best investment for $600. An mhdt Paradisea can be had for under %500 and make a real difference in the sound.
If she's using a stock RCA interconnect between CD and receiver, maybe upgrade that to a decent Audioquest or similar IC for under $100 also.