Pioneer TX-7800 “tuna”. This one has had the power section recapped with Nichicon caps, and most of the audio with Nichicon muse, Elna, and a couple of Os-con caps- it sounds wonderful! (all of the caps were cryo treated) I built a cage around the transformer that has anti-EMI/RFI shielding and put Siltech ERS cloth on the transformer. The top and bottom have been damped (see all of the circles for the different damping and caps). This tuner “sounds good” it picks up stations pretty well- but it just sounds great. Almost all of these 7800’s have peeling plastic veneer, this was no exception- I it off the sides and top and painted the whole thing semi-gloss black to match the black components I am selling.This is a well thought of tuner, especially for the price- this is what the Tuner Information site has to say about it:
This little brother of the TX-9800 has 4 gangs and 3 filters, like the Kenwood KT-7300, but its performance is stunning: more sensitive than a modified Onkyo T-9090, and just about as selective as the T-9090 when modified with one 110 kHz and two 150 kHz filters. The TX-7800 has only one IF setting for FM so it’s not likely to satisfy the competing desires of an audiophile-DXer as well as a KT-7500 (for example) might, because a filter mod to maximize selectivity in the TX-7800 will necessarily affect its audio quality. (In the KT-7500 and other dual-IF tuners, a wide-bandwidth ceramic filter may be left in the wide IF mode for great sound on local stations while narrower filters can be installed in the narrow IF mode to improve selectivity for DXing.) But a modified TX-7800 might be superior to a modified KT-7500 for DXing, with terrific adjacent channel rejection and a crisp, clean sound. It does, however, have an annoying combined “Muting On/Stereo” and “Muting Off/Mono” switch that prevents one from choosing to listen to a weak signal in slightly noisy stereo. The TX-7800 is one of the very few tuners with wide and narrow bandwidth settings for the AM band. Our contributor Roger says the TX-7800 only has two gangs for AM, but switching to Narrow mode ups the selectivity to 50 dB vs. 15 dB in Wide mode (according to the published specs). In comparison, Roger’s TX-9100, with a 3-gang AM section, has a single bandwidth setting with selectivity of 40 dB.
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