What is the best usb convertor

The V-Link serves well and is inexpensive. I bought a Link II on AG for $70. I find several on E-bay at $100 or less. I have an Audiophilio 2/Purepower in my main rig. That combo is better however at ~5x the price on the used market.

The V-Link represents great value.

If I needed one, I would try the Empirical Audio Off-Ramp. It has lots of features and options. If you don't like it, they give a full refund.

The Gustard U12 saw a lot of Audiophilleo users jump ship, about $180 on slow boat from China. Does a nice job with the Metrum Octave. Past $1k its time to get a newer DAC with integrated asynch USB

Yes Zd, if I had the resources i also would like to try the Off-Ramp. But then again, I might also be upgrading my entire system.

I agree with David, if one was to spend ‘Off-Ramp’ type $$$ a newer DAC may be in order.

Not knowing more about Ramy’s budget, intent on use, and his/her system, it is hard to make a recommendation as to what might be ‘best’.

I use a Gustard U12 into my Audio-gd Master 7's BNC input and I am pretty happy with it. I wouldn't mind trying the Empirical Audio Off Ramp as well, but I have a few more things that are higher priority in my audio chain.