I have 4 2 channel systems (maybe I should be 2x4?).

1. Muse Audio D class 2 channel amplifier, about 8 wpc into 8 ohms ($30)
2. Pyramid Power Supply (about $35)
3. Sony DV 999 CD/DVD player. (used $100)
4. Michaura M55 speakers (like our M22s)
5. Velodyne 10" sub (about $250 on sale)
Price altogether $565 (ubid was giving away the Michauras, put down $100)
Sound Quality? EXCELLENT.

Kenwood KA9100 flagship 2 channel amplifier - used local paper $100
Sony CA9ES CD player ($100 used)
M22s (used $150)
subwoofer Velodyne CHT10 about $250.
Cost about $600
Sound Quality? EXCELLENT

Harman Kardon 665 flagship 2 channel amp - used local paper $100
Michaura M66 (like our M60s) (about $200 ebay or ubid don't remember)

You don't have to spend $5,000 for a great 2 channel system.
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Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.