Monoprice Tube Headphone Amp for $61 + S&H

The same coupon SAVING5 drop the price of the new condition Monoprice Stereo Tube Headphone Amp for $61 plus shipping. The price before the coupon is $66~. This has USB input, RCA in and out, and Bluetooth input. A flip switch on the front switches between the three input options.

If you are planning a $200+ order, use coupon SAVING20 instead, it will get you $20 off a $200+ order. The coupon expires Saturday night (8/12/17).

Speaking of Monoprice, their lightweight on-ears go for $10, while their tooth-shaped dual-driver in-ears go for $9 with free shipping, as part of a Free Shipping promotion of sub-$10 gadgets.