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Trevor Wilson

On 19/09/2014 3:46 PM, wrote:
" there were a couple of Marantz models (Model 140, 2275) which
used Motorola (in-house numbered) output devices. They appeared to
be similar to the MJ15003/4."

Alot of Marantz buyers were aware of the change. They did not want to
se "2S___" on the output transistors. Made them think they were
getting a Sun Valley Marantz, not a Chatsworth Marantz.

**I doubt that. Models released prior to those two ones (1060, 1030, et
al), concurrently to those models (2015, 2220, 2230, et al) and after
those two models, all used Japanese output devices. IMO, it was likely
that those two models were heavily designed by Chatsworth, rather than
Japan. In any case, the giveaway was the compliance plate on the back of
all Marantz amps which indicated that the product was designed by
Marantz California and manufactured my Marantz Japan Inc (MJI). The vast
majority of buyers would see that compliance plate long before they saw
any output transistors buried inside the products. I should also add
that the last Californian manufactured product (apart from speakers) was
the Marantz Model 510 and 510M. Both used Japanese output devices
(2SD555 and complement, if memory serves).

--
Trevor Wilson www.rageaudio.com.au