@viber6
Keep in mind the dac in the now ~ 10 y/o 105 is far from SOTA, as is the AA dac/pre, meaning a significant dac or dac/pre upgrade might well be more accurate without being hot, but... Typically, dac/pres are a rare breed, and separates may, or may not, be a significant upgrade, depending on additional; iso devices, power cords and cabling. Alas, those are $$$$$, and since everything is a compromise, one must choose their poison based on wallet.
Underwood is now selling a wide range of Audio-GD kit. Their R2R dacs and preamps look excellent, with extraordinary build quality. Their R2R-1 FPGA PCM/DSD DAC @ $1,199.00 might be an upgrade to my now 5 y/o AA DDP-1. For the well heeled; R7HE MK2 State of the art Resistor Ladder DAC FPGA controlled upgradable DAC w/regenerative power supply $4990.00
https://www.underwoodhifi.com/products/audio-gd
hth
Keep in mind the dac in the now ~ 10 y/o 105 is far from SOTA, as is the AA dac/pre, meaning a significant dac or dac/pre upgrade might well be more accurate without being hot, but... Typically, dac/pres are a rare breed, and separates may, or may not, be a significant upgrade, depending on additional; iso devices, power cords and cabling. Alas, those are $$$$$, and since everything is a compromise, one must choose their poison based on wallet.
Underwood is now selling a wide range of Audio-GD kit. Their R2R dacs and preamps look excellent, with extraordinary build quality. Their R2R-1 FPGA PCM/DSD DAC @ $1,199.00 might be an upgrade to my now 5 y/o AA DDP-1. For the well heeled; R7HE MK2 State of the art Resistor Ladder DAC FPGA controlled upgradable DAC w/regenerative power supply $4990.00
https://www.underwoodhifi.com/products/audio-gd
hth