dripping with vintage vibe, these collectible sealed true nos toshiba provide an open yet mellow sound stage like a vinyl record

these extra special unopened 6au6a (6136) are also premium star editions! the cca of japan... the highest grade ever available

this translates into the purest sound reproduction via lowest-noise, batch selection, burn-in and special qc testing process

revered by guitar players for rich creamy sound reproduction, highlighting the warmest tube-era precious metallurgy

involving beautiful clean tones that shine in low to mid gain apps, later breakup is harmonically rich and layered

defined lows relaxed mids and sweet highs, high musicality classic for preamps stereos tube mics and more hifi apps

whether its vocals instrumentals or percussion, the holographic sonic imaging of vintage toshiba are legendary

6au6a feature defined warm up times, higher heater cathode ratings + stable performance under variable temp/shock conditions

many listeners+producers mention these as a low noise improvement over many russian+chinese 6j4p varieties which fail fast

upgrade your hifi tuner / sony c800 mic + power supply w/ 6au6a premium vacuum audio tubes (most users overlook that the dual power supply tubes in their older sony can be upgraded

note: newer c800g power supplies utilize a 12at7 ecc81 single, which we also have in stock!

give several sessions or up to 100+ hours w/ your preamps voltage to fully cure (breakin is important)

ships worldwide well packed

some hifi apps for premium 6au6 upgrades include: sansui 1000a ~ schoeps cm61 mic ~ sony c800/g mic ~ sony c37a altec 21 mic ~ calrec ~ mcIntosh fm tuners ~ mcintosh mx 110 (x 3) / mcintosh mr67 ~ ma 6 multiplex mr 66 adapter (x 1)mr 55 tube am-fm /mono (x 3) ~ mr 55A tube am-fm mono (x 4) ~ mr 65 tube/mono (x 4) ~ mr 65b tube fm tuner stereo (x 4)mr 66 tube mono/stereo (x 4) ~ mr 67 tube fm tuner stereo (x 3) ~ mr 71 tube fm/stereo (x 4) ~ fisher 800(b) ~ scott 330dwarm audio wa8000 mic ~ stam audio sa800g mk1 mic ~ golden age premier ga8000 mic + more apps!