Pair McIntosh MC30 with Triad HS-1 Input Transformer like Western Electric KS16575-L1

Email me first: [email protected]. Thanks.

These very special McIntosh MC30 Tube Amps were removed from a working system in studio. They are matched pair with consecutive numbers (actually by 1). The very special thing is the highly sought-after Triad HS-1 Input Transformer connected to one of the inputs. I examined the installation and was convinced that the HS-1 were factory installed, not some nasty hole drilled by amateur adventurer. One of the pictures shows the underside of the Triad HS-1. Undersides of both units are very good. One looks all original, the 2nd unit has 3 or 4 of those so-called bumble bee capacitors updated. No corrosion.

A typical MC30 has two identical serial numbers stamped on the back of chassis. These MC30 also have two stamped numbers. One is slightly above 22xxxx like a typical MC30, and the second number is 21xx. So, these 4-digit numbers are factory code for the special configuration.

I was able to find one picture showing the same Triad HS-1 on a MC30 on European website (but only in Google Images search cache). And McIntosh also made Western Electric KS16575-L1 (Ebay item 180798622043, beautiful condition, went for over $5800) which used Triad HS-1 in input. So, due to the possible rarity or historical reasons we are seeing here, I would like to offer these amps for sale in original form, before considering alternative route.

Please share with me if you know something about this special configuration. I'll be thankful.

Good for restoration, due to pitting on the chassis. There is an Ebay seller who makes very high quality chromed chassis with silk screen print, just like original. Else are great shape (e.g., transformers are nice). Certainly, you can clean them up and use the original chassis. No tubes are included. Guarantee all McIntosh transformers (M150B and M152B) are good.

My price of $2400 is based on: Triad HS-1 ($600) + MC30 ($1600) + Rarity ($200). If that sounds laughable or ridiculous, please make me an offer that deemed more reasonable. If I don't sell, will consider separate the Triad from MC30.