How To Install And Remove Vacuum Tubes; Installing The Tubes; Removing The Tubes; Tube Puller - PS Audio Stellar M1200 Owner's Reference Manual

Vaccuum Tube
The M1200 amplifiers come with their vacuum tubes installed. Changing the tubes is easy. The
Maintenance
process is as simple as removing the rear vacuum tube access plate and installing the new tube.
Changing to a different 12AU7 tube can result in a sound that is more to one's preference and
allows the opportunity to optimize the system's synergy. If it's desired to try a different tube,
obtaining good quality and low noise/microphonic tubes are the customers responsibility. PS
Audio will not be held accountable for noises or poor sound quality due to any tube other than
ones shipped from the PS Audio factory.
How to Install and
Items Needed:
Remove Vacuum
Tubes
•
•

Installing the Tubes

1.
driver.
2.
3.
4.

Removing the Tubes

1.
driver.

Tube Puller

2.
If you are having difficulty reaching the tube with your hands, we offer a specialized tube puller on
our website.
Go to https://www.psaudio.com/product-category/accessories/

Cables Matter

The cables that you use can have a dramatic influence on the sound of your system. Carefully
choose your speaker cables and connecting cables to the equipment. Our preference for input
cables is balanced, XLR type, but well-built single ended RCA cables are fine as well. Speaker
cables can make or break the performance of an amplifier and great care should be taken in using
only the best match for your loudspeakers and Stellar amplifier.
7
®
#2 Phillips-head screwdriver
12AU7 Vacuum Tube
Remove the tube access plate on the rear of the M1200 using a Phillips-head screw
Orient the tube so that it aligns with the keyed area on the tube socket.
Insert the tube into the tube socket until the glass is seated up to the ceramic of the tube
socket.
Screw the tube access plate back into place.
Remove the tube access plate on the rear of the M1200 using a Phillips-head screw
While gently pulling, roll the tube in a circular motion until it frees itself from the socket.
Getting Started
Stellar M1200 Amplifier