








Audio Research SP-6B // Vintage High Definition Tube Preamplifier
The Audio Research SP-6B isn’t just a tube preamp—it’s a golden-age relic of analog perfection, dripping in warmth, detail, and pure musicality. Built between 1979 and 1982, this thing was the must-have preamp of its era, and today, it still wipes the floor with plenty of modern gear that costs way more.
If you’re a vinyl junkie, a tube lover, or just someone who appreciates gear that actually sounds like music, the SP-6B is one of the greats.
- Replaced two capacitors in power supply
- Cleaned all control contacts
- Verified all inputs and outputs
- Unit is configured for moving magnet phono cartridges
- All tubes test good
Original: $1,499.00
-65%$1,499.00
$524.65Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Audio Research SP-6B isn’t just a tube preamp—it’s a golden-age relic of analog perfection, dripping in warmth, detail, and pure musicality. Built between 1979 and 1982, this thing was the must-have preamp of its era, and today, it still wipes the floor with plenty of modern gear that costs way more.
If you’re a vinyl junkie, a tube lover, or just someone who appreciates gear that actually sounds like music, the SP-6B is one of the greats.
- Replaced two capacitors in power supply
- Cleaned all control contacts
- Verified all inputs and outputs
- Unit is configured for moving magnet phono cartridges
- All tubes test good























