Audio Pre-amplifier

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6293 RCA NIB

¥3,934

BRIMAR 12AU7 ECC82 MATCHED PAIR

On offer we have a beautiful matched pair of white print Brimar 12AU7/ ECC82. These devices present with superb matching both within the envelope and inter device. These devices have tested on our AVO VCM163 valve tester as having 100% emission with very close matching for each triode section within the envelope. V3: Section 1: Ia = 10.0 mA; gm = 2.2 mA/V V3: Section 2: Ia = 10.0 mA; gm = 2.2 mA/V V4: Section 1: Ia =10.0 mA; gm = 2.0 mA/V V4: Section 2: Ia = 9.5 mA; gm = 1.9 mA/V The specification for a new/100% emission valve is: Ia = 10 mA; gm = 2.2 mA/V As you can see, this result show a really strong matched pair of valves with good matching of each triode section within each envelope.
¥9,078

BRIMAR CV4003 MILITARY 12AU7 ECC82 MATCHED PAIR FROM 1974

On offer we have a beautiful matched pair of white print Brimar CV4003, these are military specification 12AU7/ ECC82. Both devices carry a military cartouche that indicate a 1974 manufacture date. Both devices present with superb matching both within the envelope and inter device. These devices have tested on our AVO VCM163 valve tester as having nominal specification emission with very close matching for each triode section within the envelope.

BRIMAR FOOTSCRAY TALL BOY BLACK GLASS BLACK BASE SILVER PRINT 6SN7GT 1950S MANUFACTURE NOS BULK PACKED

We have on offer today, one of these sonically lush high performance triodes. The device carries markings in silver ink on the fat black micanol base, the envelope is carbonised black glass 2 inch high. This device was produced at the Brimar - STC Footscray works. This device shows good emission and close matching for each triode section within each envelope - a hallmark of a good valve.
¥13,617

BRIMAR RED PRINT 12AT7 MATCHED PAIR OF HIGH GRADE ECC81

On offer today is a pair of Brimar Red print 12AT7 twin triodes. Carrying good red print, these test as excellentusing my AVO Valve Characteristic Meter VCM163 with the following results: At Va = 250V Vg = -2.0V U15: Section 1: Ia = 9.5 mA; gm = 5.1 mA/V U15: Section 2: Ia = 10 mA; gm = 5.1 mA/V U16: Section 1: Ia = 9.0 mA; gm = 5.1 mA/V U16: Section 2: Ia = 9.2 mA; gm = 5.2 mA/V The specification for a new/100% emission valve is: Ia = 10mA; gm = 5.5mA/V As you can see, this result show a really strong matched pair of valves with good matching of each triode section within each envelope.
¥9,834

CLEAR TOP SCREEDED BOTTOM MULLARD WHITE PRINT ECC31 WARTIME MANUFACTURE

On offer today we have a superb ECC31, wartime manufacture showing superb white print and full emission and excellent matching from each section of this medium output power triode - superb in every way.
¥10,137

MATCHED PAIR OF MULLARD ECC34 TWIN TRIODES

On offer today we have a beautiful matched pair of ECC34 twin triodes by Mullard. On test using my AVO VCM163, these showed good emission and excellent matching both between each section within each envelope and inter valve too.
¥21,182

MULLARD BRITISH MADE MEDIUM ENVELOPE OLD SHIELD 6SN7GT BLACK BASE CLEAR GLASS MANUFACTURE

We have on offer today, one of these high performance triodes which presents the sound stage with a lush midrange and top bass registers whilst the top end remains silkysmooth without headroom roll-off. A signature characteristic of these is supreme female voice reproduction. This 1.75" height glass envelope sports the Mullard old shield and 6SN7GT notation in white ink. This device shows good emission and close matching for each triode section within each envelope - a hallmark of a good valve.
¥5,598

MULLARD CV181 MIL SPEC ECC32 BROWN BASE 1954 MANUFACTURE

This EX EQUIPMENT TESTED example carries only a slightly smudged military cartouche in white print and shows a production date of March 1954. The base is brown low loss micanol and is tightly secured to the glass envelope All pins are bright and corrosion free. This device is used, ex equipment but has been tested using my AVO VCM 163 valve tester and as you can see from the test data presented below, it gives data for anode current, Ia and mutual conductance gm that is within nominal Mullard 100% emission spec:- At Va = 250V Vg = -4.6V Section 1: Ia = 6.0 mA; gm = 1.7 mA/V Section 2: Ia = 7.0 mA; gm = 2.0 mA/V The specification for a new/100% emission valve is: Ia =6.0mA; gm = 2.3mA/V As you can see, these results show a strong device with extremely good matching of each triode section within each valve envelope.
¥29,503

MULLARD ECF82 YELLOW LABEL NEW BOXED

On offer today, a smashing new boxed 6U8 by Mullard and with yellow inking too.
¥3,329

MULLARD GREY GLASS OLD SHIELD 12SN7GT BOXED NEW

On offer today we have this lovely Mullard 12SN7GT, new boxed old 1950s stock as shown.
¥9,078

MULLARD OLD SHIELD WHITE PRINT ECC83 MATCHED PAIR

On offer today we have a matched pair of Mullard old shield white print ECC83 . Using our AVO VCM163 for conditions of or Va = 250 V Vg = -2.0V against a nominal specification of anode current Ia = 1.2 mA and mutual conductance gm = 1.6 mA/V, the following results were obtained:- Valve C1, A1 Ia = 1.0 mA gm = 1.4 mA/V Valve C1, A2 Ia = 1.0 mA gm = 1.5 mA/V Valve C2, A1 Ia = 1.0 mA gm = 1.4 mA/V Valve C2, A2 Ia = 1.0 mA gm = 1.3 mA/V As you can appreciate this represents excellent matching of each triode section within each envelope and superb inter valve matching such that this represents and excellent matched pair.
¥10,288

MULLARD WHITE PRINT ECC31 WARTIME MANUFACTURE

On offer today we have a superb ECC31, wartime manufacture showing superb white print and full emission and excellent matching from each section of this medium output power triode - superb in every way.
¥11,347

MULLARD WHITE PRINT ECC31 WARTIME MANUFACTURE

On offer today we have a superb ECC31, wartime manufacture showing superb white print and full emission and excellent matching from each section of this medium output power triode - superb in every way.
¥11,347

STC BRIMAR 12AU7 ECC82 18mm LONG ANODE MATCHED PAIR SAME FACTORY CODE

On offer we have a beautiful matched pair of 18mm, 'long plate' white print STC Brimar 12AU7/ ECC82 carrying identical factory codes of 1413. These devices present with superb matching both within the envelope and inter device. These devices have tested on our AVO VCM163 valve tester as having nominal emission with very close matching for each triode section within the envelope. A21: Section 1: Ia = 10.5 mA; gm = 1.9 mA/V A21: Section 2: Ia = 10.5 mA; gm = 1.9 mA/V A22: Section 1: Ia =10.0 mA; gm = 1.9 mA/V A22: Section 2: Ia = 10.0 mA; gm = 2.0 mA/V The specification for a new/100% emission valve is: Ia = 10 mA; gm = 2.2 mA/V As you can see, this result show a really strong matched pair of valves with good matching of each triode section within each envelope.
¥11,347

ECC33 CV2821 TWIN TRIODE VALVE VARIOUS MANUFACTURERS

Octal twin triode valve - high slope low impedance, high gain with low heater consumption.

ECC34 TWIN TRIODE VALVE VARIOUS MANUFACTURERS

Octal twin triode valve
From ¥21,182