Promo sheet for the Gibson ES-340TD from its launch in 1969
The ES-340TD was launched in 1969, and was available until 1974. It was very similar to the ES-335TD with a couple exceptions: the woods used, and the wiring - which allowed an out-of-phase configuration for a "snarly type sound, in demand by todays players". The birch body with maple neck contrasted the maple body with mahogany neck of the 335 at this point.
ES stood for Electric Spanish, and TD stood for Thinline Double pickup, though this was often omitted; it is often referred to as the ES340, or just 340
Whilst the 335 had a typical pickup selector switch; neck/bridge/both pickups, the 340 three way switch was wired to be off/pickups in phase/pickups out of phase. The blend of pickups could of course be adjusted as required with the seperate volume and tone controls. In 1976, ES-335s were fitted with a coil tap switch that could emulate the out of phase wiring to some extent. The ES340 was more expensive than the ES335, (see the table below for relative pricing) and comparitively few were shipped; just 1561 instruments compared to 17346 335s (not including 12 strings) in the same period
The following description is taken from the 1970 Gibson thinline catalogue
The Gibson ES-340TD introduces a new dimension in electronic sound versatility. A thin archtop, semi-acoustic body with double venetian cutaway design. Selected birch body with white pearl binding.
FEATURES: Semi-acoustic body, with solid hard-rock maple center piece. Laminated maple neck. Beautiful brazilian rosewood fingerboard with miniature block pearloid inlays. Exclusive adjustable truss rod. Decorative, inlay mother-of-pearl peghead. Chrome-plated parts. Tune-O-Matic bridge. Twin chrome-plated Humbucking pickups. Master volume control. Master mixer control. Three-position toggle switch. 1: Normal position for standard guitar sounds, 2: on or out phase tonalities, 3: stand-by position. 16" wide, 19" long, 1 ¾" thin: 24 ¾" scale, 22 frets.
ES-340TDW - Walnut finish
ES-340TDN - Natural finish
519 - Faultless plush case
304 - Archcraft plush case
ZC-19 - Zipper cover for 519 case