You make us assume too much, although the comments about tubes and B&W's are good.
Why do you want to change amps? You refer to 'repairing it'. Are you blowing power tubes and having to have the resistors in the bias curcuit replaced too often? Some times folks use tubes that really won't work well in an amp even though they are of the same generic type recommended. Amp too warm or cold tone wise? Have you tried different power tubes? This can make a huge difference in tone, but won't help in the power department much.
Fill in the blanks.
Why do you want to change amps? You refer to 'repairing it'. Are you blowing power tubes and having to have the resistors in the bias curcuit replaced too often? Some times folks use tubes that really won't work well in an amp even though they are of the same generic type recommended. Amp too warm or cold tone wise? Have you tried different power tubes? This can make a huge difference in tone, but won't help in the power department much.
Fill in the blanks.