Revox head interchangeability?

[jwrosenthal]

Hey guys,

I periodically see Revox heads for the B77 come up on ebay at what appear to be fair prices. The heads in my A77 mkII are fine now, but I know they do have a bit of wear and will eventually (in a couple years) need replacement. Are the heads from the B77 compatible with the A77? Are the heads the same from the MkI-MkIV in the A77 line?


James R.

 

[Nakdoc]

no the heads are different.

 

[SaSi]

I am not certain but think they are the same. I will check the SM for part numbers

 

[guiller]

If I remember correctly, only the erase head is different.

 

[Tinman]

Yes, only the erase head is different between the A77 and B77.

Just make sure you get the right track format.

 

[lbruun]

Are these heads also interchangeable with Revox g36/f36 ? I think the swap from original heads would improve the high freq extension on these machines.

 

[goldear]

As far as I know the record and play heads are interchangable between the A77 & B77. Although I believe the the MkIII and beyond A77 heads may have have used a somewhat superior alloy the older heads. The erase heads are totally different though and are not interchangable.

The A77/B77 heads are not interchangable with the G36 heads even though the later G36 heads do look very similar. The G36 heads are much higher impedance than are the A77/B77 heads, and the tube circuitry isn't designed to use the newer low-impedance heads.