User`s manual

Wheatfield AudioWheatfield Audio HA-2 User's ManualHA-2 User's Manual
11/19/99 Page 6
The Tubes
Tubes don’t last forever, so you can expect to replace the tubes from time to time. If you
notice degradation of the sound, or a lowering of the volume, it may be time to replace
the tubes.
You can replace the tubes yourself. Just find a high-end Hi-Fi shop that sells tubes, or
look on the internet – there are a number of companies that sell tubes on-line for very
reasonable prices. Purchase the same tube types as what was originally supplied in the
amplifier.
You don’t have to use tubes made by the same manufacturer as those shipped with the
amplifier – any tube with the same type is OK. Also, the “style”, or glass shape of the
tube, can be different. For example, we may use a Sovtek 5U4G rectifier tube. You can
replace it with an RCA 5U4GB tube.
Wheatfield Audio’s Warranty
Your HA-2 amplifier is warranted to be free of defects for a period of one year after you
receive it. If anything fails during that time, excluding the tubes, we will fix it for free.
You will have to take it, or pay to ship it, back to where you bought it.
The tubes are warranted for a period of six months.
After the one year warranty period, contact the dealer that sold you your HA-2 if you
have a problem. He can either fix it or arrange to get it back to us to fix.