Usually, Onkyo AV receivers have a fairly simple and understandable "name". TX stands for receiver, the following letters are supported technologies. But with numbers, the situation is a little more complicated: there are models in which the right and left digits are a series, and the number in the middle is the year, and there are just with the number and year of release.

Consider an example:


1.TX receiver;

2. SR — Volume sound support;

3. 393 — The numbers on the left and on the right indicate the series (in this case 3), the number in the middle indicates the year of manufacture of the model (9 — 2019, 8 — 2018, 7 — 2017).