Audio Research SP20 Preamp
Re-tube your Audio Research SP20 Preamp with our specially selected vacuum tube sets. Our Audio Research tube replacement kits are designed for your amplifier and come in different option levels ranging from OEM to Premium to Ultimate.
We’ve been supplying tubes for Audio Research amps for over 20 years. Use our extensive knowledge, experience and customer feedback to select re-tube packages that will work great in your tube amp.