Orthotone Emisonic EL34 Amplifier
Archived listing from the original vintage-amplifier.com. Prices, seller details and purchase links have been removed; this page is a reference record, and nothing here is for sale. About this archive.
Vintage an mega rare Orthotone EMISONIC / STD 373, Serial # J91377, 25 watt amp.
EL34 Ultralinear Push-pull tube power amplifiers made in England.
( No tubes are included)
It is in excellent cosmetic, IT COMES WITH ONE CUSTOM RCA INPUT ADAPTOR
Manufactured for hmv/ emi by std original very good quality transformers, this amp is superior to the more common leak TL25+
About this model
A 25-watt British amplifier with EL34 output tubes in ultra-linear push-pull, labelled Orthotone Emisonic STD 373, serial J91377. The seller describes it as made for HMV/EMI by STD and rates it above the more common Leak TL/25 Plus, which has a similar 25-watt rating. That comparison is the seller's opinion.
It came without tubes and with a custom RCA input adaptor.
| Brand | Orthotone Emisonic (listing) |
|---|---|
| Model | STD 373 (listing) |
| Made for | HMV / EMI, per listing |
| Output | 25 W, EL34 ultra-linear push-pull (listing) |
| Country | England (listing) |
Questions collectors ask
How does the Orthotone Emisonic compare with a Leak TL/25 Plus?
On paper they are similar: 25 watts from ultra-linear EL34s. The archived seller preferred the Emisonic; that is an opinion, not a measurement.
What output tubes does the Orthotone Emisonic use?
EL34s in ultra-linear push-pull, for 25 watts, according to the listing.
Sources: Wikipedia: EL34; Wikipedia: Ultra-linear.
