blackface bandmaster replacement output transformer

The Allen is better souning than the MM in my opinion.
Can't quite understand why mm is so much money.I have not been impressed with the sound quality.

 

Allens are good, so are Mercury Magnetics. I've never done a side by side comparison.

MMs are more expensive because they're made in California where everything is more expensive (especially compared to the midwest where Heyboers are made) due to the cost of living and general business expenses are higher.

 

I have NOT compared the 2 transformers you mentioned, but I replaced the OT in my '65 Bandmaster with Allen's TO40MT and it sounds really good. Many will argue that the Bandmaster's OEM OT lends to the tone with the saturated OT sound... my finding were that the TO40MT made the bottom much tighter and the overall volume of the amp step up a notch. My Bandmaster just seems to have more "balls" than it had with the original OT. The Allen OT was the best $60 I've spent on this amp...

 

Use the Allen it is fine and will do the job you are asking of it.

 

I don't think the cost of living can account for a 3 fold increase though. They charge it because they can. They are a more aggressive marketer than Heyboer. And there are always those that think something that costs more must be a superior product. I've done some A/B testing with both Fender and Marshall replacements; both brands are great upgrades to stock OTs.

 

The Allen will be fine with the added benefit of fitting in the existing mounting holes in the chassis... no need to drill that vintage chassis!

 

A Twin/Dual Showman would be a good choice if you want an 8ohm load. The chassis may already have the additional holes.

 

I have that OT in my Allen OF and it sounds huge.. TONS of bass on tap. I usually turn the bass down to 2 or less on that amp (the mids and highs are plentiful too). I honestly don't know how the MM OT could be any better thant he Heybor/Allen? Throw that extra $140 at some nicer speakers.. they will make more of a difference than the differece between the Heybor & MM's.