The TK-66U is a multivoltage version, on our one a switch on the back for 240v or 110v with a tab screwed on to avoid switching, later amps put this sort of voltage changing inside. Takes time to set up so to have a chat. Quite a heavy vinyl wrap wood case, very retro looks not dissimilar to early National receivers.
This Duette is another obscure one, if actually one with zero web presence beyond us so we research it, to the point it didn’t exist anywhere not even on Japanese sites hidden in translation. Инструкция для радиостанции Kenwood TK-3107/2107 на русском языке скачать! This has to be the sweetest 25w amp you’ll hear. We didn’t upgrade too much at the time we had it & it could do as well as the 1500TF below if the power difference limits it. T= USA 110v version, TF = EU-World version. Speaker connecting allows 2 pairs but not together & L+R are not the top row, but 2 up 2 down if not marked clearly. The back panel has easier to use screw connectors, pre out-power amp in sockets & a different MW antenna else much the same. The ads only show Amps, Cartridges & Turntables for a few months, no sales meant back to tape again.
The power amp is just 6 transistors which is remarkable. 8ohm continuous is rated 82.5w into 4 ohm. Plenty of sites now give data & manuals about Vintage Hifi, the best is HFE, but there aren’t many reviewing them. Original spec (as aged) is strangely very limited and soft sounding & hides the high quality in here. Open grille on top means 48 years of dirt inside. Недорогая модель из популярной линейки Kenwood TH-F5. Аккумулятор повышенной ёмкости 2300 мАч. 15.06.2015 В продажу поступила обновленная версия Kenwood TH-F5 Turbo. For the fact Amps & Speakers don’t all match well, to rate higher than ‘excellent’ may not be excellent to you if a 1967 amp doesn’t match 1992 speakers.