DAC | The Valve Store

6N1P / 6H1П dual triode (single)

Bob — Mon, 13 Apr 2026 09:51:43 +0000

The 6N1P (6Н1П) is a Soviet noval dual triode with characteristics broadly similar to the ECC88 / 6DJ8 family, widely used as a line stage and output buffer valve in Russian Hi-Fi equipment and adopted by Western audiophile designers who appreciate its warm character and ready availability.

While not a direct drop-in for ECC88 in all circuits (heater current differs), the 6N1P is used in equipment specifically designed for it. It is also popular in kits and in non-critical ECC88-substitution applications.

Noval (9-pin) base. Supplied as a single valve.

6N1P-EV / 6H1П-EB enhanced dual triode (single)

Bob — Mon, 13 Apr 2026 09:51:43 +0000

The 6N1P-EV (6Н1П-ЕВ) is the long-life, enhanced-specification version of the 6N1P dual triode. The ‘EV’ suffix (ЕВ in Cyrillic) denotes extended life ratings and tighter parameter tolerances, resulting in greater consistency and longer service life than the standard version.

This type is preferred for critical Hi-Fi applications, DAC output stages, and headphone amplifiers where the additional reliability and consistency of the EV-grade is worth the premium over standard 6N1P stock.

Noval (9-pin) base. Supplied as a single valve.

Schiit Stjarna valve upgrade set – Philips 6CG7 / ECC99

Bob — Mon, 13 Apr 2026 09:51:42 +0000

The Schiit Stjarna is a high-performance DAC and preamplifier that uses 6CG7 / ECC99 dual triodes as its analogue output stage. Replacing the stock valves with premium NOS Philips examples is one of the most impactful upgrades available for this component.

Philips’ Dutch-made 6CG7 / ECC99 is celebrated for its exceptional linearity, low noise, and extended high-frequency response — qualities that translate directly into improved resolution and soundstage in the Stjarna’s output stage. The ECC99 is a high-current variant well suited to headphone-driving output stages.

This set provides the correct quantity of Philips NOS valves for a complete upgrade of the Schiit Stjarna. Tested before despatch.

Mullard 6080 / 6AS7G dual triode – NOS (single)

Bob — Mon, 13 Apr 2026 09:50:21 +0000

The 6080 / 6AS7G is a dual power triode designed for use in series-pass voltage regulators and, subsequently, adopted enthusiastically by the audiophile community for headphone amplifier output stages and single-ended power amplifier designs. Its low amplification factor (µ ≈ 2) and high current capability make it suited to driving low-impedance loads.

Mullard’s UK-made 6080 is particularly prized for its build quality and sonic characteristics. It is used in premium headphone amplifiers, regulated supplies, and high-current audio buffers. The Schiit Valhalla and similar designs call for this type.

Octal (8-pin) base. New Old Stock. Country of origin: UK. Supplied as a single tested valve.

GE JAN 5670W D-getter dual triode – NOS (single)

Bob — Mon, 13 Apr 2026 09:10:05 +0000

This GE 5670W is a Joint Army-Navy (JAN) military-specification example distinguished by its D-shaped getter — a detail collectors and audiophiles use to identify specific production runs with particular sonic and reliability characteristics.

The 5670 family’s military heritage ensures robust construction and a long operating life, making NOS examples from GE among the most trusted for audiophile signal chain applications. Used in headphone amplifiers, DAC output stages, and line stage preamplifiers.

Made in USA. New Old Stock. Supplied as a single tested valve.

GE 5670W triple-mica dual triode – NOS (single)

Bob — Mon, 13 Apr 2026 09:10:02 +0000

The 5670 (also 2C51, 396A) is a miniature dual triode originally developed for military telecommunications. The triple-mica ‘W’ grade version from General Electric is among the most sought-after NOS small-signal valves, featuring three mica spacers for exceptional structural rigidity and extremely low microphony.

The 5670W has become a favourite among headphone amplifier and DAC output stage designers, offering low noise, excellent linearity, and long operating life. It is used with adapters in circuits designed for 12AU7 or 6922 valves.

Made in USA. New Old Stock. Supplied as a single tested valve.

6N23P dual triode preamp valve (single)

Bob — Mon, 13 Apr 2026 04:13:43 +0000

The 6N23P is a Soviet-manufactured high-transconductance dual triode equivalent to the ECC88 / 6DJ8 / 6922, a family of valves widely used in high-end audio for phono stage amplification, DAC output buffering, and low-noise line stage preamplifiers. The 6N23P was manufactured to military specifications (Mil-Spec) in the USSR, with tighter tolerances than civilian ECC88 production.

Soviet Mil-Spec tubes are sought after by audiophiles for their long service life, low noise, and consistent parameters. The 6N23P offers an economical entry point to the ECC88/6DJ8 family with genuine military-grade construction.

Supplied as a single valve. Compatible with ECC88, 6DJ8, and 6922 sockets (check heater current requirements for 6922 variants).

AWV 6SN7 preamp valve (used / pulls)

Bob — Mon, 13 Apr 2026 04:13:42 +0000

The AWV (Amalgamated Wireless Valve Co.) 6SN7GT is an Australian-manufactured dual triode of the octal family, produced under licence from American designs for the domestic and export market. The 6SN7 is one of the great all-purpose dual triodes — used as a driver, phase inverter, line amplifier, and cathode follower in countless Hi-Fi designs from the 1940s onward.

Australian-made AWV valves are prized for their quality construction and represent an important part of domestic electronics history. These are used / pulls — removed from tested equipment — and each one is tested before dispatch. The 6SN7 remains popular in modern audiophile equipment, DAC output stages, and headphone amplifiers.

Supplied as a single valve. Compatible with all 6SN7GT and 6SN7 sockets.

JJ Electronic ECC823 preamp valve (single)

Bob — Mon, 13 Apr 2026 04:13:36 +0000

The JJ Electronic ECC823 is a hybrid dual triode that combines one high-gain triode section (equivalent to one half of a 12AX7 / ECC83) with one lower-gain triode section (equivalent to one half of a 12AU7 / ECC82) in a single 9-pin Noval envelope. This gives the circuit designer two different gain stages in one valve position.

The ECC823 is particularly useful in guitar amplifier designs where the first triode provides high gain for input sensitivity and the second triode functions as a driver or cathode follower with lower gain and higher current capability. It is also used in custom DAC output stages and line preamps where a single high-gain/low-gain cascaded stage is advantageous. An unusually versatile component for the creative amp builder.

Supplied as a single valve.

JJ Electronic ECC802S / 12AU7 preamp valve (single)

Bob — Mon, 13 Apr 2026 04:13:35 +0000

The JJ Electronic ECC802S is a long-plate variant of the ECC82 / 12AU7 dual triode, known for its smooth, detailed presentation and lower noise than short-plate versions of the same type. The ECC802S designation (analogous to the Telefunken ECC802S) indicates a ruggedised long-plate construction intended for demanding professional and audiophile applications.

The 12AU7 family is one of the most widely used preamp types in audio — found in line stages, CD player output buffers, DAC output stages, and as driver valves in push-pull power amplifiers. JJ’s ECC802S variant is a cost-effective way to access the long-plate sonic character. Fits PrimaLuna, Line Magnetic, and most audiophile preamplifiers.

Supplied as a single valve.