What is the best usb convertor


I have a number of DACs ,Zanden,Accuphase 800,which do not have USB inputs I would like to purchase a USB convertor that I could use with my DACs.Any recommendations.
ramy
Hi, the V-Link 192 is still readily available on Amazon for less than a hundred bucks. It's a cheap and fantastic solution.
"07-16-15: Mesch
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’."

Take a look at the OP's system. It looks like he can easily afford the off ramp.
The Bel Canto REFLink and uLink both work very well.

***Bel Canto dealer disclaimer
Im using Gustard U12. Great for the price. Others to consider:

Melodious Audio MX-U8
Tanly Audio
Yellowtec PUC2
Audiobyte Hydra z
Berkeley Alpha USB
I had a Berkeley Alpha USB for a few years. I read about the tube buffer output stage in the Lampizator USB Transport, which is actually a USB-to-S/PDIF converter, and I wanted to try it. After playing them side by side for a few weeks, I decided to sell the Berkeley. I've been using the Lampizator for 8 months and I am very happy with my decision, but it's not cheap.