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Specification
Filament specifications:
DC/AC Voltage 5 V
DC/AC Current 2 A
Full-wave, Thermionic High Vacuum Rectifier
Maximum Ratings
With Choke-Input Filter:
A-C Plate Voltage per Plate (RMS) 660 volts
D-C Output Current 225 ma
Minimum In..
HK$4,500.00
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Specification
KR Audio 5U4G
With Choke-Input Filter
AC Plate Voltage per Plate (RMS) 550 Volts
DC Output Current 225 mA
Minimum Input-Choke Inductance 3 henrys
With Capacitor-Input Filter
AC Plate Voltage per Plate (RMS) 450 Volts
DC Output Cur..
HK$4,500.00
-
Maximum Plate Voltage
550 V
Maximum Plate Current
120 mA
Plate Dissipation
50 Watts
Va
450 V
Ia
100 mA
Vg
-90 V
Transconductance
6.2 mA/V
Amplification Factor
3.9
..
HK$4,500.00
-
Maximum Plate Voltage
550 V
Maximum Plate Current
120 mA
Plate Dissipation
50 Watts
Va
450 V
Ia
100 mA
Vg
-90 V
Transconductance
6.2 mA/V
Amplification Factor
3.9
..
HK$5,100.00
-
Maximum Plate Voltage
600 V
Maximum Plate Current
160 mA
Plate Dissipation
70 Watts
Va
450 V
Ia
100 mA
Vg
-94 V
Transconductance
5.7 mA/V
Amplification Factor
3.7
..
HK$5,400.00
-
Maximum Plate Voltage
300 V
Maximum Plate Current
100 mA
Plate Dissipation
15 Watts
Va
250 V
Ia
70 mA
Vg
-45 V
Transconductance
5.2 mA/V
Amplification Factor
3.8
..
HK$3,900.00
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BRAND NEW - JUST ARRIVED - NEW PRODUCTION.
The new KR Audio KT88 has thoroughly convinced us. Therefore, we proudly announce and present the very best of all KT88 tubes.
Stunning definition, amazing details, cozy warmth, sweet clarity and a very well balanced harmonic spectrum, right out of bo..
HK$2,400.00
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Specification
General data Filament specifications:
DC/AC Voltage 6.3 V
DC/AC Current 2.0 A
Amplification Factor 8
Power Amplifier class A1
Maximum
DC Plate Voltage 850 V
DC Screen Grid 650 V
Dissipation Pa/Pg2 70/9 W
DC Cathode..
HK$4,500.00
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Maximum Plate Voltage
1250 V
Maximum Plate Current
140 mA
Plate Dissipation
100 Watts
Va
650 V
Ia
90 mA
Vg
-68 V
Transconductance
3.0 mA/V
Amplification Factor
5.5
..
HK$6,900.00
-
Maximum Plate Voltage
1250 V
Maximum Plate Current
140 mA
Plate Dissipation
100 Watts
Va
650 V
Ia
90 mA
Vg
-15 V
Transconductance
4.0 mA/V
Amplification Factor
12
..
HK$6,300.00
-
Maximum Plate Voltage
600 V
Maximum Plate Current
150 mA
Plate Dissipation
65 Watts
Va
450 V
Ia
100 mA
Vg
-94 V
Transconductance
5.7 mA/V
Amplification Factor
3.7
..
HK$5,400.00
-
Maximum Plate Voltage
350 V
Maximum Plate Current
60 mA
Plate Dissipation
20 Watts
Va
250 V
Ia
48 mA
Vg
-32 V
Transconductance
5.1 mA/V
Amplification Factor
5.0
..
HK$4,200.00
-
Maximum Plate Voltage
500 V
Maximum Plate Current
90 mA
Plate Dissipation
30 Watts
Va
400 V
Ia
63 mA
Vg
-31 V
Transconductance
7.4 mA/V
Amplification Factor
9.5
..
HK$4,200.00
-
Maximum Plate Voltage
180 V
Maximum Plate Current
2 mA (Vf=4V,Vg=0V)
Va
120 V
Ia
1 mA
Vg
-0.5 V
Transconductance
0.3 mA/V
Filament Voltage
4 V (DC/AC)
Filament Current
0.6 ..
HK$3,000.00
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Specification
Filament specifications:
Voltage 2.5 V
Current 1.3 A
Amplification Factor 3.5
DC Plate Voltage 300 V
DC Plate Current 50 mA
Dissipation 15 W
DC Plate Voltage 250 V
DC Plate Current 34 mA
Grid Voltage -50 V
..
HK$3,450.00
-
..
HK$4,500.00
-
Maximum Plate Voltage
1000 V
Maximum Plate Current
140 mA
Plate Dissipation
100 Watts
Va
650 V
Ia
90 mA
Vg
-87 V
Transconductance
4.4 mA/V
Amplification Factor
5.3
..
HK$6,900.00
-
Maximum Plate Voltage
650 V
Maximum Plate Current
250 mA
Plate Dissipation
150 Watts
Va
400 V
Ia
160 mA
Vg
-83 V
Transconductance
9.9 mA/V
Amplification Factor
3.7
..
HK$19,200.00