For sale is a Questyle CMA Twelve Master (not the Standard) which features a ROGERS ceramic PCB. I purchased this new in November 2020 from Audio46 in NYC. It is an excellent AIO headphone amplifier and DAC. This sounds fantastic with both HD800S and HiFiMan Arya headphones. There is a handy switch which allows use of the onboard AK4490 DAC separately with another amp. This worked really well when I wanted to have a tube amp flavor instead of the solid state.

All factory packaging included, along with warranty, manual, and remote control. The only blemish on this otherwise flawless unit is a small ding in the chassis above the letter M in CMA (shown in one of the pictures).

Price includes shipping/insurance within the continental US and Paypal fees.

Please read the following excellent review, if interested in learning more: https://www.whathifi.com/us/reviews/questyle-cma-twelve