Review submitted by Dr. Audio
Author’s Rating:
I have never written a review on Amazon but I felt this needed to be delt with. I had trouble with this tuner receiving both XM radio and HD radio.

I actually returned one unit in exchange for another and the problem continued. After listening to XM radio the tuner was unable to decode the HD signal. My phone calls to both XM radio and Onkyo were unrevealing and terribly unhelpful. Both companies hit a new low in providing useless information. After experimenting I found that my roof antenna was putting out TOO STRONG a signal and probably over loading the tuning circuits. I added a 3dB attenuator and the problem was solved.

The unit has excellent sound and makes the best of the compressed formats

on XM and HD radio. But beware, you antenna may actually be too good.

Another quirk is that you have to press a button to find out what is being played rather than the information appearing automatically.

Review submitted by Charles Harris Platt
Author’s Rating:
Unit is very nice, looks great in the stack with my other equipment (NAD Amp & PreAmp and Denon SACD player), but please read carefully. It is Sirius and XM READY, meaning it does not have a built in tuner and you will need to buy a separate unit to get either one. Somewhat disappointing for the price and not very well documented here. Other than that I have no complaints and it seems to be a nice unit, but I would not have bought it if I had known it didn’t have the tuner built in.

Review submitted by Gugelhupf
Author’s Rating:
A good tuner but browsing the radio spectrum is a push button affair. There is a button to decrease the frequency and one to increase it. This is so cheap! A tuner in this price range should have a rotary dial that allows quick channel surfing. (For instance, see the Marantz ST7001).

Review submitted by J. D. MCCALL
Author’s Rating:
OK, if you need a tuner and you don’t want to be caught with your pants down, format-wise, then this is the one you want. AM, FM, RDS, Sirius, XM, and HD-Radio (which I LOVE!), this tuner can do them all! Operation has been flawless, with the added perk of remote control of pretty much every function. It seems well built for the money, as all Onkyo products are, in my experience. Sound quality is very good to my ears, but then again, I don’t have a $3000 Magnum Dynalab tuner to compare it to! All in all, a very high value product.

Review submitted by Phillip J. Lavios
Author’s Rating:
Onkyo always seems to make a few really nice gems in separate components! for example: the A-9555 integrated amplifier is truly an audiophile piece of equipment!! it exudes all the qualities one looks for in an audiophile quality integrated amp! however, its companion piece the T-555 Tuner is a different story. Onkyo advertises that it is Satellite radio ready, when it is not!! you have to buy a separate tuner to get XM or Sirius radio. When calling Onkyo customer service IT WAS A JOKE!! one customer service rep could not even tell me about the product! another said that it was fully capable and ready to recieve XM or Sirius radio and all I had to do was subscribe to them! I requested another rep. and was told to call back. I called back, and got another rep, he seemed knowledgeable and he was very apologetic for the misinformation I got from the other rep. I returned the tuner, and I bought the Marantz which was on sale! it is fully ready for XM or sirius! If ONkyo did a little work on the T-4555 it would be an excellent tuner!!