Then they probably did fix it.
Do you hear noise?
If you don't need to add anything between source and power amp then keep it as simple as possible the way you have it now.
Adding components when not really needed can only subtract from the signal.
I can also see on the photo of the CD player's back panel that it has digital inputs to utilise the 24/192 built in DAC so why do you need the Beresford in your signature?
Rega P2 • Ortofon 2M Blue • Rega Fono Mini • Naim Nait 5i • Naim CD5i • Naim NAT 05 FM tuner • Rega R3 loudspeakers • Naim NAC-A5 speaker cable • Beresford TC7520 • Panasonic DMR-EX78 DVD/HDD • Chord Chrysalis, Crimson & Naim interconnects