EL37 CV586 CV1947 PP60 6L6G 5881 OUTPUT PENTODE VARIOUS MANUFACTURERS

Pentode output valve
Manufacturer: Mullard
The EL37 audio output valve is of pentode configuration and is Mullard’s answer to the mighty KT66 beam tetrode. These meaty beasts could deliver up to 70 Watts at 2.5% distortion when used in push-pull.

Developed from the earlier EL31 and rerated to have higher anode dissipation, the EL37 in characterised by having a massive mutual conductance when compared against it’s contemporaries. Indeed, 11.0 mA/V is almost twice the value of that shown by the KT66 or the 6L6.

Introduced in 1946, the EL37 was superseded by the introduction of the EL34 some 8 years later, praised for their scarcity, their exceptional sound and ease of driving they are keenly sought for audio amplifier and guitar amplifier applications today, key examples of which include: - 

Dr. Z Route 66
 Marshall Bluesbreaker JTM45 MKIV 1966
 Marshall Bluesbreaker reissue 1964
 Marshall JTM45
 Metro Amp (George Metropoulos)
 Metropolis JTM-45 2009
 Pure Sixty-Four The "64" Head
 QUAD II
 Soultone 1986ps
 THD Bivalve
 Victoria Regal 2
Picture of MULLARD EL37 PENTODE BROWN BASE WHITE PRINT
MULLARD EL37 PENTODE BROWN BASE WHITE PRINT
Wowee, a lovely EL37 here today for you to try n buy. Rarely offered oft desired but here to sell today Against the nominal AVO specification for 100% emission of :- Ia =100 mA; gm = 11.0mA/V @ Va = 250V; Vg = -15V Obtained results were:- Device 1: Ia = 99 mA; gm = 10.5 mA/V As you can see, these results are slightly lower than nominal but should give superlative performance in Push-Pull output applications.
Stock Code: X4
Availability: 1 in stock
Delivery date: 1 week
£110.00
Picture of EL37 MULLARD WHITE PRINT MATCHED PAIR
EL37 MULLARD WHITE PRINT MATCHED PAIR
On offer today we have a lovely matched pair of Mullard EL37. Against the nominal AVO specification for 100% emission of :- Ia =100 mA; gm = 11.0mA/V @ Va = 250V; Vg = -15V Obtained results were:- B11: Ia = 70 mA; gm = 7.8 mA/V Y27: Ia = 70 mA; gm = 8.5 mA/V As you can see, these results are slightly lower than nominal but should give superlative performance in Push-Pull output applications as the matching of both gm and Ia is superb.
Stock Code: y27/B11
Availability: 1 in stock
Delivery date: 1 week
£90.00
Picture of EL37 MULLARD WHITE PRINT MATCHED PAIR
EL37 MULLARD WHITE PRINT MATCHED PAIR
On offer today we have a lovely matched pair of Mullard EL37. Against the nominal AVO specification for 100% emission of :- Ia =100 mA; gm = 11.0mA/V @ Va = 250V; Vg = -15V Obtained results were:- y10: Ia = 72 mA; gm = 9.0 mA/V Y24: Ia = 70 mA; gm = 9.0 mA/V As you can see, these results are slightly lower than nominal but should give superlative performance in Push-Pull output applications as the matching of both gm and Ia is superb.
Stock Code: y10/y24
Availability: 1 in stock
Delivery date: 1 week
£110.00
Picture of MULLARD EL37 YELLOW LABEL PENTODE GUITAR AMP HEAVEN
MULLARD EL37 YELLOW LABEL PENTODE GUITAR AMP HEAVEN
owee, a lovely EL37 here today for you to try n buy. Rarely offered oft desired but here to sell today Against the nominal AVO specification for 100% emission of :- Ia =100 mA; gm = 11.0mA/V @ Va = 250V; Vg = -15V Obtained results were:- Device 1: Ia = 70 mA; gm = 10.5 mA/V As you can see, these results are slightly lower than nominal but should give superlative performance in Push-Pull output applications.
Stock Code: 8.5.3
Availability: 1 in stock
Delivery date: 1 week
£45.00
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