https://surplus-research.com/ daily https://surplus-research.com/products/sr-002-v-3-1-s-dac-included 2026-07-17T11:39:30-04:00 daily https://cdn.shopify.com/s/files/1/0464/6063/3253/files/1_1_2x3_5149fa19-1463-42f5-a78e-4720e5e4a24d.jpg?v=1770002825 SR-002 V 3.1 [S] (DAC INCLUDED) https://surplus-research.com/products/esp-dac 2026-07-17T11:39:30-04:00 daily https://cdn.shopify.com/s/files/1/0464/6063/3253/files/DAC_c87c1d45-e45a-4390-9e36-a28c3eface4e.png?v=1783992876 ESP DAC