Yuuup, this.
http://www.ebay.com/itm/New-Tralucent-Audio-DacAmp-One-Portable-Amplifier-/321951385123?hash=item4af5cc4623:g:h~oAAOSw-W5UtjMm
Was originally $500 USD but they're clearing out old stock for just $199. If you search this thread you will hear me rave about the DacAmp One with my A83, there's also a thread you can find in the portable amps section. Its extremely high in detail and resolution, it was just priced to high on release imo but now its a steal. I still own mine.
Also, look for some form of aftermarket or alternative cable for your A83, doesn't need to be expensive, the stock cable doesn't allow the housings to swivel due to a locking pin on the stock cable plugs, this limits their insertion angle. I do respect the stock cable, though you can dramatically increase the fit and comfort.
See how you go on the stock cable first.