PreAmp Tubes

6SJ7, 5693, 717A, 713A, 6SH7, 6SD7, 6J8P, 6*8

Currently use in my Musical Paradise MP-301

Shuguang 6J8P$20/pair
Use commonly in many of the Chinese tube amplifier. Sound wise not that bad. it is a low noise tube

shuguang 6j8p_b

Soviet  (OTK) 6米8(NOS)$40/pair
a good replacement for the 6J8P tube

6米8_b

 

RCA KENRAD 6SH7 (NOS) – $70/pair
8-pin octal base Pentode Military grade tubes made in USA/CanadaTube amplifier. Not only smooth the high, it also give a better bass

RCA_KENRAD_6SH7a

 

 

RCA 6SJ7 (NOS)$85/pair
8-pin octal base Pentode early 40 Military grade tubes made in USA/Canada. It said thick good clarity and warm sound as well as good in dynamic. Typical American sound.

RCA_6SJ7a

 

Raytheon 6SJ7-GT (NOS. Metal Base Vacuum Tubes)$90/pair
Early 40 tubes. Sound charm detail is extremely prominent , strong sense of human vocal.

raytheon 6sj7

Raytheon JAN CRP 6SJ7GT VT-116A (NOS. Metal Base Vacuum Tubes)$110/pair
Early 40s tubes , square ring , charm sounding and good analytical ability .
US military grade tubes, low noise level , high frequency not dry and very refine sounding as compare to similar series of tubes. Mid smooth, deep low frequency is firm and thick! Inherit good vibration characteristic , aggressive but yet long life tubes.

raytheon 6sj7_VT116Aa

Radiotron 6SJ7GT – $110/pair
Very Rare with Mesh construction. Made in Holland. Not a very bassy tube but very detail

 

5693 black tube$100/pair
These are premium long life tube and is a premium replacement for 6SJ7 series and is very low noise

GE Jan

GE Black 5693

5693 Red tubes$120/pair
These are ‘Special Red’ premium long life tube and is a premium replacement for 6SJ7 series and is very low noise

**Rare** Raytheon

Raytheon Red 5693_a

Sylvania

Sylvania 5693a

RCA / GE

GE Red 5693_a Jan Red RCA 5693a_whitelabel Jan Red RCA 5693c_yellowlabel

Raytheon JAN-CRP-717A VT-269$120/pair
Early 40s US military grade tubes. Sound prestigious , good sound positioning , iron ring construction , very clear in sound separation, strong analytical , musical and full of flavor

WE717A_Raytheon_1

Western Electric 717A VT-269 (by TungSol)$120/pair
The WE-717A is a pentode tube that can also be wired as a triode (like in the Yamamoto A08 tube amplifiers).
This 1940s military spec 717A was made for Western Electric by Tung-Sol. The glass has heavy chrome flashing and is labeled Tung-Sol WE 717A.
Sound prestigious , good sound positioning , iron ring construction , very clear in sound separation, strong analytical , musical and full of flavor
If you ever wondered why almost all of the “Western Electric” 713A and 717A tubes were made by Raytheon and TungSol, here is the story I got from Norm Krim, an engineer at Raytheon. During WWII, when these were a new technology and in demand, there was an accident / explosion on the Western Electric line where these were made. Apparently, someone connected a hydrogen gas bottle where an oxygen bottle was supposed to go, and “boom”. The government required Western Electric to give the tooling and materials to Raytheon and TungSol so production could continue.

WE717A_Raytheon_4

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6J32P / EF86 / 6267/6米32N

Currently can be use in my Musical Paradise MP-301 ( but need converter)

Winged “C” Svetlana 6米32N / EF86 (NOS) – $80/pair (match pair by MP, with EF86-6SJ7 converter)$50/pair (same code, without converter )
Fine Transparent sound , natural and full, very low background noise and microphone effect , for headset users this will be the immediate upgrade tube .

6J32P_Ef86

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3S4 / DL92 / CV820 / 2P2 / 2N2N

Philip DL92 (NOS. Made in Holland). Currently  use in Sense Audio G1 Pre-amp$70/pair

Philip DL92

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6SL7/6N9P/6H9C/6SU7/5691

Sylvania JAN-CHS-6SL7GT$110/pair

Military spec tubes (VT-229) made in the 1940’s. Very rare find. These tubes have long bottles with black bases, black plates and bottom-getters. One of the top-five 6SL7s. Sounds similar to later production Sylvania with its large soundstage.

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6SN7/6N8P/5692/CV181

Baldwin 6SN7GTB NOS (GreenLabel made by Sylvania) – $90/pair
Great blackplate Sylvania GTB tubes screened for demanding use in electronic organs. All have passed the Baldwin factory test for audio use!  MUCH better than the Russian or Chinese tubes available today, at about the same price! Medium glass envelope, full width octal base (not coin base)marked with the Sylvania green

Baldwin_6SN7_GreenLabel_made by Sylvania

RCA 6SN7GT (NOS)Selling $90/pair
Square ring with high seat.These 1960’s RCA 6SN7GT are great sounding tubes. With black plates and made in the 60’s these are sure to liven up any gear that uses the 6SN7 tube.

RCA_6SN7a

Sylvania 6SN7GTB NOS (GreenLabel) – $100/pair
Short glass envelopes. These are late 1940s-early 1950s vintage (most with the early green label), very first issue of the GTB type, among the best 6SN7 types ever made, and are in very limited supply. Closely matched under load for Gm and plate current.These are the “civilian” version of the military tubes listed above, and probably one of the best non-military types around. These are the very first of the GTB types, but are from the same period as the GTA tubes, with the heavy chrome dome getter flashing extending up to 1/2 inch down the sides of the tube. Soundwise noticeable improvement – a punchier presentation, more immediate. Even the soundstage is more focused.

Sylvania_6SN7_GreenLabel_a

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6FQ7 / 6CG7

GE 6FQ7/6CG7  NOS$100/pair
Green Label. Made in US. This is an excellent choice for any hifi or audio equipment which takes a 6CG7 = 6FQ7

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6H30P

EH 630Pi (gold pin)$120/pair

This is the premium gold pin high performance version of the Sovtek 6H30Pi super twin triode. This is the perfect high transconductance, high performance tube for preamplifier and driver circuits.

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6DJ8 / 6922 / ECC88 / E88CC / CV2492 /6N11 / 6H23

SYLVANIA USN- 6922 GOLD PIN TUBE (Vintage) – $90/pair
This is a vintage tube. Rare Sylvania gold pin tube. Test strong. Only 1 pair left

 

QTL ECC88/6DJ8 (NOS)$70/pair
Rare QTL early Soviet production, make in years 50–60,(NOS with box) matching tube sound sweet , cohesion , balance, good location , and smooth. A very good  listening experience kind of feel on how these olden tubes will sound

QTL 6922_a

 

Soviet 6H23 (NOS)$50/pair
Soviet 6H23 tube is a very good tube , sound sweet and mellow

Soviet 6H23_a

 

EH6922$55/pair
The Electro-Harmonix 6922EH tube is a brand new pre-amp tube that is made in Russia. A high frequency twin triode preamplifier tube used in studio and hi-fi equipment.

EH6922a

 

Jan Philips 6922$90/pair
Military grade tube which cited a better bottom end and “less offensive” high frequencies , in short they are low noise Pre-tubes, which guarantees the best performance for preamplifiers.
Jan Philip 6922

 

BRIMAR  ECC88/CV5358 (NOS) – $90/pair
NOS MILITARY BOXED FOREIGN MADE(EUROPEAN). RUGGEDISED CV5358 MILITARY VERSION

ECC88_Brimar_1

 

SIEMENS Ei ECC88/6DJ8 (NOS) – $100/pair
ECC88/6DJ8 Ei YUGOSLAVIA NOS. BOXED AND BRANDED BY SIEMENS. MADE WITH MULLARD/TELEFUNKEN TOOLING IN THE Ei FACTORY HOLLAND TYPE LORRY WHEEL GETTER. EXCELLENT QULITY TUBES

siemens ECC88a

 

Genalex – Gold Lion E88CC / 6922 – $130/pair
The Genalex Gold Lion E88CC/6922 is a premium grade selected small signal twin-triode that is a suitable replacement for all 6DJ8, ECC88, 6922, E88CC, and 7308 types. This tube features gold plated pins and is manufactured to extremely tight specifications, making it the highest quality current production E88CC/6922 available.
With clarity and detail flowing over the entire musical bandwidth, the Genelex Gold Lion E88CC / 6922 tube presents an articulate tone very reminiscent of vintage hand selected Amperex E88CC tubes. A bold sounding tube that warmly embraces the midrange and low end without unbalancing the crystalline highs, the Genelex Gold Lion E88CC / 6922 marries the finest materials and surgical like construction resulting in the finest tube made today. The full shielding between the two triodes insures incredibly low cross-talk distortion, perfect for minute sources such as phonograph cartridges and tube microphones where every nuance is important. The noise canceling spiral filaments, thick structural mica spacers, and gold plated contact pins round out the finishing foundations that make this Genelex Gold Lion E88CC / 6922 tube the top choice for discriminating audiophile applications.

gold-lion-6922_b

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12AU7 / ECC82 / CV4003 / 5814 / 6189

EH 12AU7$50/pair
The Electro-Harmonix 12AU7A / ECC82 is a brand new pre-amp tube that is made in Russia. It is a premium quality 12AU7 tube built to match the performance of the military-industrial original GE 6189 tube. Low microphonics and excellent linearity offer a musical and harmonic soundstage, making this 12AU7 tube equal to the original and a cut above the competition.

EH 12AU7

 

RCA 12AU7 (NOS)$60/pair
Ring with square pillars short gray screen. Made by RCA USA in the early days.

RCA_12AU7b

 

EH 12AU7 Gold$70/pair
The Electro-Harmonix 12AU7A / ECC82 GOLD come with gold pin (provide more smoother sounding) is a brand new pre-amp tube that is made in Russia. It is a premium quality 12AU7 tube built to match the performance of the military-industrial original GE 6189 tube. Low microphonics and excellent linearity offer a musical and harmonic soundstage, making this 12AU7 tube equal to the original and a cut above the competition.

EH 12au7 gold

 

RFT ECC82/12AU7 NOS VALVE/TUBE GERMAN – $90/pair
MADE IN GERMANY. GREAT RARE VALVES. Warm with good soundstage. Easy listening and not fatiguing.

ECC82_RTF_a

 

PINNACLE 13D5A EQUIVALENT TO ECC82/12AU7$90/pair
MADE BY THORN BRIMAR UK

ECC82_Pinnacle_a

 

Fullmusic (全尔真) 12AU7(No Stock)
Premium quality tubes manufactured in Tianjin City, China.The midrange was warm, detailed, and the highs extremely extended, and silky smooth. Their quality can be easily compete with the like of Mullards or Telefunkens

fullmusic 12XU7

 

Treasure 12AU7 – $100/pair

Manufacture by Premium Tubes maker in china – Shuguang. If you know the quality of their Psvane Premium tube, these Treasure tubes are close to the quality or could be similar. Warm, detail with tight bass.

 

Genalex – Gold Lion ECC82 / 12AU7 – $130/pair

Designed specifically for audio use, the Genelex Gold Lion B749 / ECC82 / 12AU7 is the preferred choice over all other ambiguous industrial tubes. This is a true audiophile tube with superb linearity and extremely low noise. Make using finest hand selected materials and assembled with watchmaker precision, this tube will bring new detail to your musical experience. With noise canceling spiral filaments, thick structural mica spacers, and gold plated contact pins, the Genelex Gold Lion B749 tubes have an inspiring transient impact with a weighty, dynamic midrange. Equally capable in both musical instrument and audiophile applications, the imagining detail is solid across the entire sound scape making the tube one of the most listenable preamp tubes in production

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12AT7 /ECC81

GE USN-12AT7WB (NOS)$50/pair
TRIPLE MICA TUBE

 

RCA 12AT7 (NOS)$50/pair
Ring with short gray Plate. Made by RCA in the early day. The wording printing on the tubes still very clear

RCA_12AT7b

 

EH 12AT7$50/pair
The Electro-Harmonix 12AT7 / ECC81 is a brand new pre-amp tube that is made in Russia
A very well built tube, the 12AT7EH will excel in any guitar application as well as in Hi-Fi applications.
The very dynamic and deep low end response of the long plate EH 12AT7 tube makes it an excellent choice in reverb driver and phase inverter stages. However, use in high gain preamp stages is not recommended due to potential microphonics.

EH 12AT7

 

EH 12AT7 GOLD$70/pair
Brand new pre-amp tube that is made in Russia. Long plate version, with superior dissipation over the originals. Perfect for reverb circuits and drivers. Very thick gold plated pins. Electro-Harmonix tubes are among the absolute best. EHX designs, manufactures, and engineers their tubes for demanding high fidelity and overall warmth.

EH 12AT Gold_b

 

Treasure (天籁) 12AT7-T$100/pair
Manufacture by Premium Tubes maker in china – Shuguang. If you know the quality of their Psvane Premium tube, these Treasure tubes are close to the quality or could be similar. Warm, detail with tight bass.

Treasure 12AT7-T

 

Genalex – Gold Lion ECC81 / 12AT7 – $130/pair

Original Genalex Gold Lion ECC81/B739 tubes are considered the best 12AT7 types ever made. They are also among the rarest types available. A true high performance dual triode vacuum tube. They exhibit a large detailed soundstage that is characterized by an expressive midrange, deep tight bass, and a smooth extended high end. The reissue Genalex Gold Lion ECC81/B739 recreates the sound signature of the original. This tube features balanced sections and gold plated pins.

 

MULLARD ECC81 / 12AT7 NOS$100/pair
OLD MULLARD SHIELD LOGO. MADE IN GREAT BRITAIN

Mullard ECC81_a

 

CV4024 / 12AT7WA KQDDK MULLARD NOS$100/pair
SIMILAR TO E81CC,ECC801S,12AT7WA,12AT7. MILITARY SPEC VALVE. MADE IN ENGLAND
CV MILITARY PRINT- KQDDK MULLARD CODE
ACID ETCHED FACTORY CODES IN GLASS 654-R4J1. CODES MAY VARY SLIGHTLY. 1980’S PRODUCTION

 

PHILIPS / MULLARD NOS 12AT7WA / ECC81 – $100/pair
WA’ – MILITARY RUGGEDISED VERSION
PHILIPS BRANDED BUT MADE BY MULLARD UK
1980’s DATE CODE

 

M8162 / CV4024 / 12AT7WA MULLARD NOS $100/pair
Mullard made in England
Factory codes in glass. In original government carton
Dual marked with m8162 logo and Cv4024 military print

 

AMPEREX ECC81 / 12AT7 NOS – $110/pair
A great sounding tube. MADE IN HOLLAND. ORANGE WORLD LOGO PRINT with ‘O’ RING GETTER

 

TELEFUNKEN EI NOS ECC81 /12AT7  – $120/pair
MADE IN GERMANY . BRANDED AND BOXED BY TELEFUNKEN GERMANY
SMOOTH PLATE EI CONSTRUCTION. DIAMOND MARKS ARE IN BASE

Telefunken ECC81_a

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12AX7 / ECC83 / 7025 / CV4004

EH 12AX7$50/pair
The Electro-Harmonix 12AX7 / ECC83 is a brand new pre-amp tube that is made in Russia
The EH-12AX7 tube has a nice balanced sound, a very low noise floor and excellent performance in terms of microphonics

EH 12AX7

 

EH 12AX7 GOLD$70/pair
The Electro-Harmonix 12AX7 / ECC83 is a brand new pre-amp tube that is made in Russia. The 12AX7 Gold Pin is the Gold Plated version which offers a substantially better contact with the socket. The 12AX7EH provides high gain with ultra low noise and a detailed – musical tone that rivals the most desirable NOS types. Unique spiral filament eliminates that filament-to-cathode induced hum common on AC-powered amps. This tube can be used in phase inverters / preamp sections / driver sections – It really does well in all applications.

EH12ax7gpsgl

 
Tung-Sol 12AX7$60/pair
From our review of this tube: “There are only so many ways to describe tube tone and most have become cliches. The Tung Sol 12AX7 has the gain and drive of a Chinese 12AX7 and the pure tone of a Mullard or Brimar.”
According to the manufacturer, this Tungsol 12AX7 is the Ultimate 12AX7. Big, warm, and musical. High Gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound.
One other note about the construction of these tubes is they have filaments that are almost completely encased in the plate structure. They don’t “light up” brightly when working properly.

Note to audiophiles: These tubes are great for linestage preamps, but generally not phono stages where a very low noise floor is required.

Tung-sol 12ax7_b

 

Tungsol 12AX7 Gold – $90/pair
The Tungsol 12AX7/ECC803-S tube has gold plated pins and is low noise and low microphonics. From our review of this tube: “There are only so many ways to describe tube tone and most have become clichés. The Tung Sol 12AX7 has the gain and drive of a Chinese 12AX7 and the pure tone of a Mullard or Brimar.”
According to the manufacturer, this Tungsol 12AX7 is the Ultimate 12AX7. Big, warm, and musical. High Gain, ultra-low microphonics, and superb linearity with a dynamic 3-D sound.

Note to audiophiles: These tubes are great for linestage preamps, but generally not phono stages where a very low noise floor is required.
One other note: About the construction of these tubes is they have filaments that are almost completely encased in the plate structure. They don’t “light up” brightly when working properly

tung-sol-12ax7_gold_b

 

Mullard 12AX7 – No Stock
This new production 12AX7 / ECC83 tube is New Sensor’s reissue of the famous Mullard 12AX7.
From our review: “Microphonics is not an issue despite the larger that average plate structure. The transconductance on my sample was the same as two NOS samples I measured. Not really high gain at all, but a real good noise floor and a nice smooth tone that doesn’t encourage ear fatigue the way some preamps can be.”
One other note about the construction of these tubes is they have filaments that are almost completely encased in the plate structure. They often don’t “light up” when working properly. This is not a problem, it’s normal for the reissue Mullard 12AX7 / ECC83.

Mullard_Russia_12AX7

 

Fullmusic (全尔真) 12AX7-T – $90/pair
Premium quality tubes manufactured in Tianjin City, China.The midrange was warm, detailed, and the highs extremely extended, and silky smooth. Their quality can be easily compete with the like of Mullards or Telefunkens

fullmusic 12AX7_a

 

Genalex – Gold Lion ECC83 / 12AX7 – $130/pair

Never before has a preamp tube better reflected the Genelex Gold Lion ideals of perfection. Combining the purest raw materials, this Genelex Gold Lion B759 / ECC83 / 12AX7 tube has been designed with dual oversized plates, noise canceling spiral wound filaments, thick structural mica spacers, and gold plated contact pins. These features provide solid low end response coupled with an articulate midrange and delicately warm high end tonality. They exhibit a large detailed soundstage that is sought after by discerning audiophiles who demand the highest quality sound.The Genelex Gold Lion B759 tube is the premier choice for the best audiophile experience.

 

Winged =C= Svetlana 12AX7$120/pair
Silver ridged box anode (based on Mullard CV4004). The SED Svetlana factory ceased production in 2012 but were renowned for their quality.  All 12AX7s have been checked for good internal balancing and microphony.  SUPERIOR ACCOUSTICS AND LONG LIFE. These are some of the few remaining 12AX7s available. Made in St Petersburg.
Sevtlana_WingC_a

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6N3P / 2C51 / 5670 / 396A / 6H3

Found in several Chinese hifi amplifiers / DAC eg in my Xiang Sheng , Musical Paradise MP-D1 MK2 DAC and Miu Audio Model 302

Jan GE 5670 – $30/pair
Top military grade GE tube.  Construction details include black plates with a top halo “O” getter ring.
The tube is also a substitute for the Chinese 6n3 tube.

 

Soviet 6H3n-E (NOS)- $30/pair
Early Soviet production. Sweet and Transparent sounding

Soviet 6H3nE_b

 

Soviet 6H3-E (NOS)$30/pair
Early Soviet production, make in year 84. Pretty good sounding. Worth to give it a try

Soviet 6H3-E_c

 

Raytheon 5670 (NOS) with big black circle$50/pair
Raytheon large round black tube 5670 is produced in the 1960s , this tube sound better than the wheel ring, more comprehensive than the gray screen . Very well balance warm sweet voice tube

Raytheon 5670 with big black circle_C

 

GE 5670 triple mica black square ring(NOS)$50/pair
Produced in 1950s . Sound sweet , soft, low-frequency sound , beautiful high-frequency

GE 5670 triple mica black square ring_E

 

Assorted Chinese 6N3$4/pcs

6N3_a

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 6J1 / 5654 / 6AK5 / EF95 / 6*1 / CV4010

Currently use in my TMS T-300MK5 tube amplifier

MULLARD 6AK5 (Vintage)$30/pair
I have few pair of vintage Mullard 6Ak5/EF95/5654 tube.
The Mullard is very fast and dynamic with a deep warm bass response. The Mullard also has the smoothest and has the most detailed mid-range response out of any EF95 valve that we have tested. The result is the most dynamic and enjoyable listening experience as they bring the music to life.

 

Jan GE 5654 – $30/pair
Military grade.The 6J1 tube found in the Chinese hi fi tube amp and can be replaced with this 5654 tube for superior performance.
JanGE 5654c

 

Soviet 6米1-EB (NOS)$30/pair
This is a long life tube with sweet charming sound

Soviet 6X1-EB_a

 

RCA 5654 (early batch) (NOS)$30/pair
Good separation, dimension and  better sound stage

RCA 5654 (early batch)_a

 

Raytheon 5654 (long plate square getter) (NOS)$40/pair
This is a year 50s production.  Side ring half mercury , this tube structure is slightly different from other pipe , tube quality is very high . the sound is very comprehensive. Details of good , soft , warm, charm , very solid low frequency , high frequency and beautiful. 5654 is the top American antiques . After listening a few friends amazed everyone , sounds good , low cost

Raytheon (top grade) long plate square getter 5654_b

 

Philips 5654 (Black top )(NOS)$50/pair
Was produced in the 1950s version and is very rare. Sweet charming voice sound , very antiques tube  sounding

Philips 5654 (Black top )_a

 

Simens EF95 (NOS)$70/pair
60s new stock production origin from Mullard factory production . A large shield tubes made for Siemens.  A lot of flavor . Classical taste with full of music flavor.

Seimen EF95_a

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6H1n / ECC85 / 6N1 /6AQ8

Soviet 6H1n-BN (Bronzing word)(NOS)$30/pair
Early production of the former Soviet Union gold 6H1n-BN straight generations ECC85 6N1. Soviet 1980s products, through the production process of reform . Tube continue to improve. The tube is very stable , durable and very sweet voice. Currently use in Nobsound MD-10 Tube amplifier

Soviet Union 6H1n-BN_b

 

SIEMENS ECC85  – $90 /pair
MADE BY TUNGSRAM BOXED AND BRANDED BY SIEMENS GERMANY. Very transparent sound with good amount of body and huge sound stage. Very musical tube. Bass is solid and controlled