What are/were the best sounding cheap components you have ever had?

Onkyo 9110 Integrated. Nothing should sound this good for $300.

Pioneer bookshelf speakers designed by Andrew Jones. Absolutely great and can be had for next to nothing.

I have inherited and been gifted some great sounding stuff, but what cheap things have I bought and paid for?

latest, for my office system: 

1. AR-2ax speakers, buy, ship, restore: $750. total, sound terrific office system. Just bought a 2nd pair to restore. All/any needed parts readily available.

2. DAC, Topping D10s, $110. based on advice here. Was using PC's headphone jack to Luxman 10 wpc tube amp. Now PC's usb out to Topping to that little luxman. OBVIOUSLY Better SQ (exactly what I asked for) 75% typically, now vol at 35% typically, prior needed 75%.

gotta go, more to come

Denon DRA-355 receiver I found at a yard sale for $15. sounded stooopid good compared to my Parasound A21/P3 combo. Sadly, it didn't last too long.  It was already tired. 

Rectilinear 3A and Rectilinear 7 speakers

GAS Son of Ampzilla amp

Ambient 66 speakers

Odyssey kismet Reference Floorstanding speakers

Kenwood KA9100 integrated amp

I am afraid to say "nothing in hi-fi is cheap", There are a few bargains, but they are far to few to mention. Schiit audio comes to mind.