SOUNDARIESCRAFTED IN THAILAND
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Authorized distributor · Thailand

ISO Transformers, made in Tokyo

Soundaries is the authorized distributor of ISO Transformers in Thailand. ISO carries on the design and winding craft of the original ISO Co., the maker known worldwide as TANGO. Output transformers use Nippon Steel Orient Hi-B cut-cores, and power transformers use Orient-core with a magnetic shield. They are the same transformers we use in our own amplifiers.

A group of ISO transformers
60 modelsOutput, interstage, line, power and chokes
Your mains voltagePower transformers wound for 220–240 V at no extra charge
Matched to your circuitWe help you choose the right model for your tube

ISO Single-ended output

Single-ended output

หม้อแปลงเอาต์พุต ซิงเกิลเอนด์

Orient Hi-B cut-core output transformers for single-ended amplifiers, from the 12 W FC-12S to the 40 W FC-40 series for 211 and 845.

FC-40-10S40 W · 10 kΩFor 211, 845฿24,600
ISO FC-40-10SMade in Japan
Power
40 W (30 Hz)
Impedance
Pri 10 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
20 Hz – 55 kHz
Primary inductance
65 H (1 mW) · 80 H max at 70 mA
Max DC current
130 mA
Efficiency
0.23 dB / 16 Ω
Application
211, 845
Ask about FC-40-10SStock varies; we confirm availability and delivery time.
FC-40-5S40 W · 5 kΩFor DA30, '50, 845฿22,700
ISO FC-40-5SMade in Japan
Power
40 W (30 Hz)
Impedance
Pri 5 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
18 Hz – 70 kHz
Primary inductance
35 H (1 mW) · 42 H max at 120 mA
Max DC current
200 mA
Efficiency
0.23 dB / 16 Ω
Application
DA30, '50, 845
Ask about FC-40-5SStock varies; we confirm availability and delivery time.
FC-40-3.5S40 W · 3.5 kΩFor 300B, PX25฿22,700
ISO FC-40-3.5SMade in Japan
Power
40 W (30 Hz)
Impedance
Pri 3.5 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
15 Hz – 90 kHz
Primary inductance
28 H (1 mW) · 38 H max at 120 mA
Max DC current
250 mA
Efficiency
0.23 dB / 16 Ω
Application
300B, PX25
Ask about FC-40-3.5SStock varies; we confirm availability and delivery time.
FC-40-2.7S40 W · 2.7 kΩFor 300B฿22,700
ISO FC-40-2.7SMade in Japan
Power
40 W (30 Hz)
Impedance
Pri 2.7 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
15 Hz – 90 kHz
Primary inductance
25 H (1 mW) · 30 H max at 120 mA
Max DC current
300 mA
Efficiency
0.22 dB / 16 Ω
Application
300B
Ask about FC-40-2.7SStock varies; we confirm availability and delivery time.
FC-40-1.5S40 W · 1.5 kΩFor 300B parallel฿22,700
ISO FC-40-1.5SMade in Japan
Power
40 W (30 Hz)
Impedance
Pri 1.5 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
15 Hz – 120 kHz
Primary inductance
10 H (1 mW) · 15 H max at 170 mA
Max DC current
400 mA
Efficiency
0.22 dB / 16 Ω
Application
300B parallel
Ask about FC-40-1.5SStock varies; we confirm availability and delivery time.
FC-30-10S30 W · 10 kΩFor 211, 845฿14,500
ISO FC-30-10SMade in Japan
Power
30 W (40 Hz)
Impedance
Pri 10 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
30 Hz – 70 kHz
Primary inductance
40 H (1 mW) · 45 H max at 70 mA
Max DC current
90 mA
Efficiency
0.23 dB / 16 Ω
Application
211, 845
Ask about FC-30-10SStock varies; we confirm availability and delivery time.
FC-30-3.5SⅡ30 W · 3.5 kΩFor 300B, PX25฿14,500
ISO FC-30-3.5SⅡMade in Japan
Power
30 W (40 Hz)
Impedance
Pri 3.5 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
20 Hz – 100 kHz
Primary inductance
20 H (1 mW) · 26 H max at 80 mA
Max DC current
180 mA
Efficiency
0.19 dB / 16 Ω
Application
300B, PX25
Ask about FC-30-3.5SⅡStock varies; we confirm availability and delivery time.
FC-30-2.5S30 W · 2.5 kΩFor AD1, Ed, 2A3฿14,500
ISO FC-30-2.5SMade in Japan
Power
30 W (40 Hz)
Impedance
Pri 2.5 kΩ · Sec 4, 6, 8, 16 Ω
Response (−2 dB)
20 Hz – 120 kHz
Primary inductance
14 H (1 mW) · 20 H max at 90 mA
Max DC current
250 mA
Efficiency
0.19 dB / 16 Ω
Application
AD1, Ed, 2A3
Ask about FC-30-2.5SStock varies; we confirm availability and delivery time.
FC-20S20 W · 5 / 3.5 / 2.5 kΩFor 300B, '50, PX25, PX4, 2A3, VT-52฿8,900
ISO FC-20SMade in Japan
Power
20 W (50 Hz at 5 kΩ · 40 Hz at 3.5 kΩ · 35 Hz at 2.5 kΩ)
Impedance
Pri 5 k / 3.5 k / 2.5 kΩ · Sec 8, 16 Ω
Response (−2 dB)
35 Hz – 80 kHz (5 k) · 25 Hz – 80 kHz (3.5 k) · 20 Hz – 100 kHz (2.5 k)
Primary inductance
16 H (1 mW) · 18 H max at 80 mA
Max DC current
140 mA
Efficiency
0.26 / 0.34 / 0.47 dB / 16 Ω
Application
300B, '50, PX25, PX4, 2A3, VT-52
Ask about FC-20SStock varies; we confirm availability and delivery time.
FC-20-14S20 W · 14 kΩFor VT62, 801A, VT25 (10)฿8,900
ISO FC-20-14SMade in Japan
Power
20 W (60 Hz)
Impedance
Pri 14 kΩ · Sec 4, 8, 16 Ω
Response (−2 dB)
25 Hz – 35 kHz
Primary inductance
70 H (1 mW) · 90 H max at 30 mA
Max DC current
65 mA
Efficiency
0.29 dB / 16 Ω
Application
VT62, 801A, VT25 (10)
Ask about FC-20-14SStock varies; we confirm availability and delivery time.
FC-20-107S20 W · 10 / 7 kΩFor VT25 (10), 6N6G, 42, 6V6฿8,900
ISO FC-20-107SMade in Japan
Power
20 W (60 Hz at 10 kΩ · 50 Hz at 7 kΩ)
Impedance
Pri 10 k / 7 kΩ · Sec 8, 16 Ω
Response (−2 dB)
40 Hz – 40 kHz (10 k) · 25 Hz – 50 kHz (7 k)
Primary inductance
30 H (1 mW) · 38 H max at 55 mA
Max DC current
100 mA
Efficiency
0.19 / 0.25 dB / 16 Ω
Application
VT25 (10), 6N6G, 42, 6V6
Ask about FC-20-107SStock varies; we confirm availability and delivery time.
FC-12S12 W · 7 / 5 / 3.5 / 2.5 kΩFor 45, 71A, EL34, 6L6, 6V6, 6BQ5฿7,400
ISO FC-12SMade in Japan
Power
12 W (70 Hz at 7 k · 60 Hz at 5 k · 50 Hz at 3.5 k · 40 Hz at 2.5 k)
Impedance
Pri 7 k / 5 k (Sec 8, 16 Ω) · 3.5 k / 2.5 k (Sec 4, 8 Ω)
Response (−2 dB)
45 Hz – 45 kHz (7 k) to 20 Hz – 80 kHz (2.5 k)
Primary inductance
16 H (1 mW) · 20 H max at 60 mA
Max DC current
80 mA
Efficiency
0.24 – 0.58 dB
Application
45, 71A, EL34, 6L6, 6V6, 6BQ5
Ask about FC-12SStock varies; we confirm availability and delivery time.
ISO Push-pull output

Push-pull output

หม้อแปลงเอาต์พุต พุชพูล

Orient Hi-B cut-core push-pull output transformers from 25 W to 120 W, with wide bandwidth down to 4 Hz.

FC-120-14120 W · 14 kΩFor 211฿22,700
ISO FC-120-14Made in Japan
Power
120 W (30 Hz)
Impedance
Pri 14 kΩ · Sec 4, 6, 8, 16 Ω
Response (−1 dB)
4 Hz – 50 kHz
Primary inductance
360 H (1 mW) · 1,600 H max
Max DC current
260 mA (two tubes) · 5 mA unbalance
Efficiency
0.16 dB
Application
211
Ask about FC-120-14Stock varies; we confirm availability and delivery time.
FC-120-8120 W · 8 kΩFor EL156, KT66฿22,700
ISO FC-120-8Made in Japan
Power
120 W (30 Hz)
Impedance
Pri 8 kΩ · Sec 4, 6, 8, 16 Ω
Response (−1 dB)
4 Hz – 60 kHz
Primary inductance
220 H (1 mW) · 970 H max
Max DC current
320 mA (two tubes) · 6 mA unbalance
Efficiency
0.16 dB
Application
EL156, KT66
Ask about FC-120-8Stock varies; we confirm availability and delivery time.
FC-120-5120 W · 5 kΩ · cathode NFB windingFor 300B, KT88, KT66, EL156฿24,100
ISO FC-120-5Made in Japan
Power
120 W (30 Hz)
Impedance
Pri 5 kΩ · Sec 4, 8, 16 Ω
Response (−1 dB)
4 Hz – 90 kHz
Primary inductance
160 H (1 mW) · 580 H max
Max DC current
420 mA (two tubes) · 8 mA unbalance
Efficiency
0.18 dB
Extra
Includes cathode NFB winding
Application
300B, KT88, KT66, EL156
Ask about FC-120-5Stock varies; we confirm availability and delivery time.
FC-120-3.5120 W · 3.5 kΩFor 300B, 6550, EL156฿22,700
ISO FC-120-3.5Made in Japan
Power
120 W (30 Hz)
Impedance
Pri 3.5 kΩ · Sec 4, 6, 8, 16 Ω
Response (−1 dB)
4 Hz – 100 kHz
Primary inductance
120 H (1 mW) · 420 H max
Max DC current
500 mA (two tubes) · 12 mA unbalance
Efficiency
0.16 dB
Application
300B, 6550, EL156
Ask about FC-120-3.5Stock varies; we confirm availability and delivery time.
FC-60-560 W · 5 kΩFor 300B, KT88, KT66, EL156฿14,500
ISO FC-60-5Made in Japan
Power
60 W (30 Hz)
Impedance
Pri 5 kΩ · Sec 4, 6, 8, 16 Ω
Response (−1 dB)
4 Hz – 80 kHz
Primary inductance
160 H (1 mW) · 380 H max
Max DC current
270 mA (two tubes) · 7 mA unbalance
Efficiency
0.21 dB
Application
300B, KT88, KT66, EL156
Ask about FC-60-5Stock varies; we confirm availability and delivery time.
FC-40-840 W · 8 kΩFor 6L6GC, 7591, 6F6฿8,900
ISO FC-40-8Made in Japan
Power
40 W (45 Hz)
Impedance
Pri 8 kΩ · Sec 4, 8, 16 Ω
Response (−1 dB)
5 Hz – 60 kHz
Primary inductance
150 H (1 mW) · 500 H max
Max DC current
200 mA (two tubes) · 5 mA unbalance
Efficiency
0.24 dB
Application
6L6GC, 7591, 6F6
Ask about FC-40-8Stock varies; we confirm availability and delivery time.
FC-40-6.640 W · 6.6 kΩFor KT66, 6L6, EL34, 7591฿8,900
ISO FC-40-6.6Made in Japan
Power
40 W (45 Hz)
Impedance
Pri 6.6 kΩ · Sec 4, 8, 16 Ω
Response (−1 dB)
7 Hz – 50 kHz
Primary inductance
160 H (1 mW) · 330 H max
Max DC current
200 mA (two tubes) · 7 mA unbalance
Efficiency
0.25 dB
Application
KT66, 6L6, EL34, 7591
Ask about FC-40-6.6Stock varies; we confirm availability and delivery time.
FC-40-540 W · 5 kΩFor 2A3, 6B4G, EL34, 6L6฿8,900
ISO FC-40-5Made in Japan
Power
40 W (45 Hz)
Impedance
Pri 5 kΩ · Sec 4, 8, 16 Ω
Response (−1 dB)
5 Hz – 80 kHz
Primary inductance
150 H (1 mW) · 320 H max
Max DC current
270 mA (two tubes) · 7 mA unbalance
Efficiency
0.25 dB
Application
2A3, 6B4G, EL34, 6L6
Ask about FC-40-5Stock varies; we confirm availability and delivery time.
FC-25-825 W · 8 kΩFor 6V6, 6BQ5, 71A฿7,400
ISO FC-25-8Made in Japan
Power
25 W (50 Hz)
Impedance
Pri 8 kΩ · Sec 4, 8, 16 Ω
Response (−1 dB)
7 Hz – 50 kHz
Primary inductance
160 H (1 mW) · 350 H max
Max DC current
130 mA (two tubes) · 6 mA unbalance
Efficiency
0.3 dB
Application
6V6, 6BQ5, 71A
Ask about FC-25-8Stock varies; we confirm availability and delivery time.
FC-25-525 W · 5 kΩFor 45, 6V6, 6CW5฿7,400
ISO FC-25-5Made in Japan
Power
25 W (50 Hz)
Impedance
Pri 5 kΩ · Sec 4, 8, 16 Ω
Response (−1 dB)
7 Hz – 80 kHz
Primary inductance
100 H (1 mW) · 210 H max
Max DC current
160 mA (two tubes) · 7 mA unbalance
Efficiency
0.3 dB
Application
45, 6V6, 6CW5
Ask about FC-25-5Stock varies; we confirm availability and delivery time.
ISO Interstage

Interstage

หม้อแปลงอินเตอร์สเตจ

1:1 interstage transformer for coupling a driver stage to the output tube without a capacitor.

NC-20FⅡ1:1 · 5 kΩFor 6AH4, 6V6 (triode), 5687, 6463฿15,300
ISO NC-20FⅡMade in Japan
Primary impedance
5 kΩ (rp = 1–10 kΩ)
Turns ratio
1 : 1
Response (−2 dB)
15 Hz – 100 kHz
Primary inductance
75 H at 25 mA
Max DC current
50 mA
Max secondary output
160 V at 10 Hz
Application
6AH4, 6V6 (triode), 5687, 6463
Ask about NC-20FⅡStock varies; we confirm availability and delivery time.
ISO Line & input

Line & input

หม้อแปลงไลน์และอินพุต

Line output and 600 Ω input transformers for preamplifiers and balanced connections.

NP-12620k / 10k : 0–1.2k ΩFor Line output; input transformer in reverse฿8,400
ISO NP-126Made in Japan
Impedance
Pri 20 kΩ (split) : Sec 0–150–300–600–1.2 kΩ · Pri 10 kΩ (split) : Sec 0–75–150–300–600 Ω
Turns ratio
1 : 0.245
Response (−2 dB)
20 Hz – 30 kHz
Primary inductance
110 H at 10 mA
Max primary DC
20 mA
Max secondary output
10 Vrms (20 Hz)
Application
Line output; input transformer in reverse
Ask about NP-126Stock varies; we confirm availability and delivery time.
NN-606600 : 600 Ω inputFor 600 Ω balanced input฿8,400
ISO NN-606Made in Japan
Impedance
Pri 600 Ω / 150 Ω (split) · Sec 600 Ω / 150 Ω (split)
Turns ratio
1+1 : 1+1
Secondary output
10 V (20 Hz)
Primary inductance
60 H (1 V, 50 Hz)
Response (−1 dB)
5 Hz – 60 kHz
Application
600 Ω balanced input
Ask about NN-606Stock varies; we confirm availability and delivery time.
ISO Power · bowl case

Power · bowl case

หม้อแปลงไฟ ทรงโบว์ล

Orient-core power transformers with magnetic shield in the classic bowl-shaped case. Primary voltage can be changed to 220–240 V at no extra charge.

MS-4042360–400 V · 420 mA bridgeFor KT88, 6550A, EL156 PP ×2฿11,400
ISO MS-4042Made in Japan
Secondaries
0–20–360–400 V AC 0.72 A (DC bridge 420 mA) · 70 V AC 60 mA · 6.3 V 4 A ×2 · 6.3 V 3 A ×2
Application
KT88, 6550A, EL156 PP ×2
Size
W120×D105×H110 mm (under chassis 36 mm)
Weight
6.5 kg
Ask about MS-4042Primary wound for your mains voltage at no extra charge.
MS-1913145–185 V · voltage doubler 350 mAFor KT88, KT66, EL34 PP ×2฿10,000
ISO MS-1913Made in Japan
Secondaries
0–10–145–165–185 V AC 1.3 A (DC voltage doubler 350 mA) · 65 V AC 0.15 A · 6.3 V 3.6 A ×2 · 6.3 V 2.5 A ×2
Application
KT88, KT66, EL34 PP ×2
Size
W120×D105×H100 mm (under chassis 32 mm)
Weight
5.7 kg
Ask about MS-1913Primary wound for your mains voltage at no extra charge.
MS-4023Ⅱ360–400 V CT · 250 mAFor 300B SE ×2, KT88 PP ×1฿9,000
ISO MS-4023ⅡMade in Japan
Secondaries
400–360–0–100–360–400 V AC 0.23 A (DC CT tube 250 mA / Si 220 mA) · 5 V 3.5 A ×2 · 0–6.3–10 V 3.5 A · 0–5–6.3 V 3.5 A
Application
300B SE ×2, KT88 PP ×1
Size
W120×D105×H95 mm (under chassis 32 mm)
Weight
5.3 kg
Ask about MS-4023ⅡPrimary wound for your mains voltage at no extra charge.
MS-3228280–320 V CT · 300 mAFor 2A3, 6B4G, 6L6, VT52 PP ×2฿9,000
ISO MS-3228Made in Japan
Secondaries
320–280–0–70–280–320 V AC 0.28 A (DC CT tube 300 mA / Si 260 mA) · 0–2.5–6.3 V 5.2 A ×2 · 6.3 V 3 A · 5 V 3 A
Application
2A3, 6B4G, 6L6, VT52 PP ×2
Size
W120×D105×H95 mm (under chassis 32 mm)
Weight
5.3 kg
Ask about MS-3228Primary wound for your mains voltage at no extra charge.
MS-4019280–400 V CT · 190 mAFor PX25, PX4, AD1, RE604 SE ×2฿8,300
ISO MS-4019Made in Japan
Secondaries
400–280–0–120–280–400 V AC 0.185 A (DC CT tube 190 mA / Si 180 mA) · 4.5 V 3.5 A ×2 · 0–4–5 V 4 A · 0–4–6.3 V 3 A
Application
PX25, PX4, AD1, RE604 SE ×2
Size
W110×D96×H108 mm (under chassis 32 mm)
Weight
5.1 kg
Ask about MS-4019Primary wound for your mains voltage at no extra charge.
MS-4018370–400 V CT · 180 mAFor 300B SE ×2, 300B PP ×1฿7,400
ISO MS-4018Made in Japan
Secondaries
400–370–0–370–400 V AC 0.18 A (DC CT tube 180 mA / Si 170 mA) · 5 V 3 A · 5 V 2.5 A ×2 · 0–6.3–10 V 2 A
Application
300B SE ×2, 300B PP ×1
Size
W110×D96×H92 mm (under chassis 31 mm)
Weight
4.5 kg
Ask about MS-4018Primary wound for your mains voltage at no extra charge.
MS-3716280–370 V CT · 160 mAFor PX25, RE604, AD1, PX4 SE ×2฿6,700
ISO MS-3716Made in Japan
Secondaries
370–280–0–280–370 V AC 0.16 A (DC CT tube 160 mA / Si 150 mA) · 0–4–5 V 3 A · 4.5 V 3.5 A ×2 · 6.3 V 3 A
Application
PX25, RE604, AD1, PX4 SE ×2
Size
W110×D96×H82 mm (under chassis 30 mm)
Weight
3.8 kg
Ask about MS-3716Primary wound for your mains voltage at no extra charge.
MS-3216280–320 V CT · 160 mAFor 2A3, 45 SE ×2฿6,700
ISO MS-3216Made in Japan
Secondaries
320–280–0–70–280–320 V AC 0.16 A (DC CT tube 160 mA / Si 145 mA) · 5 V 3 A · 2.5 V 3 A ×2 · 6.3 V 3 A
Application
2A3, 45 SE ×2
Size
W110×D96×H82 mm (under chassis 30 mm)
Weight
3.8 kg
Ask about MS-3216Primary wound for your mains voltage at no extra charge.
MS-3221280–320 V CT · 210 mAFor 6V6, 6BQ5, 6F6 PP ×2฿6,700
ISO MS-3221Made in Japan
Secondaries
320–280–0–70–280–320 V AC 0.205 A (DC CT tube 210 mA / Si 200 mA) · 5 V 3 A · 6.3 V 2 A ×3
Application
6V6, 6BQ5, 6F6 PP ×2
Size
W110×D96×H82 mm (under chassis 30 mm)
Weight
3.8 kg
Ask about MS-3221Primary wound for your mains voltage at no extra charge.
MS-4812250–480 V CT · 125 mAFor VT62, 801A SE ×2฿6,700
ISO MS-4812Made in Japan
Secondaries
480–250–0–250–480 V AC 0.12 A (DC CT tube 125 mA / Si 115 mA) · 5 V 3 A · 6.3 V 3 A · 7.5 V 2 A ×2
Application
VT62, 801A SE ×2
Size
W110×D96×H82 mm (under chassis 30 mm)
Weight
3.8 kg
Ask about MS-4812Primary wound for your mains voltage at no extra charge.
MS-2814250–280 V CT · 140 mAFor 6V6, 6BQ5 PP ×1 or SE ×2฿5,600
ISO MS-2814Made in Japan
Secondaries
280–250–0–250–280 V AC 135 mA (DC CT tube 140 mA / Si 130 mA) · 5 V 2 A · 6.3 V 2 A ×3
Application
6V6, 6BQ5 PP ×1 or SE ×2
Size
W94×D77×H78 mm (under chassis 31 mm)
Weight
2.6 kg
Ask about MS-2814Primary wound for your mains voltage at no extra charge.
MS-2810250–280 V CT · 100 mAFor 6BQ5, 6GW8 SE ×2 · preamp฿5,100
ISO MS-2810Made in Japan
Secondaries
280–250–0–250–280 V AC 100 mA (DC CT tube 100 mA / Si 100 mA) · 0–5–6.3 V 2 A · 6.3 V 3 A
Application
6BQ5, 6GW8 SE ×2 · preamp
Size
W85×D70×H75 mm (under chassis 30 mm)
Weight
2.3 kg
Ask about MS-2810Primary wound for your mains voltage at no extra charge.
MS-2603260 V CT · 30 mA + 15–17 VFor Preamplifier฿4,700
ISO MS-2603Made in Japan
Secondaries
260–0–260 V AC 30 mA (DC CT 30 mA) · 0–15–17 V AC 2 A (DC bridge 1.2 A) · 6.3 V 1 A
Application
Preamplifier
Size
W85×D70×H60 mm (under chassis 22 mm)
Weight
1.6 kg
Ask about MS-2603Primary wound for your mains voltage at no extra charge.
ISO Power · rectangular case

Power · rectangular case

หม้อแปลงไฟ ทรงสี่เหลี่ยม

Fully cased Orient-core power transformers with magnetic shield, for larger amplifiers such as 211, 845 and push-pull 300B. Primary voltage changed at no extra charge.

MS-211DL370 V + 150 V · 10.5 V filamentsFor 211, 845 SE ×2฿23,700
ISO MS-211DLMade in Japan
Secondaries
370–0–370 V AC 0.36 A (DC bridge 200 mA) · 150–0–150 V AC 0.1 A (DC bridge 60 mA) · 10.5 V 5 A ×2 · 6.3 V 4.5 A · 5 V 3 A
Application
211, 845 SE ×2
Size
W125×D125×H180 mm (under chassis 36 mm)
Weight
11 kg
Ask about MS-211DLPrimary wound for your mains voltage at no extra charge.
MS-4233D370–420 V CT · 350 mAFor 300B PP ×2฿18,600
ISO MS-4233DMade in Japan
Secondaries
420–370–0–120–370–420 V AC 0.33 A (DC CT tube 350 mA / Si 320 mA) · 5 V 4 A ×2 · 5 V 6 A · 0–6.3–10 V 3 A
Application
300B PP ×2
Size
W125×D125×H138 mm (under chassis 36 mm)
Weight
9.0 kg
Ask about MS-4233DPrimary wound for your mains voltage at no extra charge.
MS-4042D360–400 V · 420 mA bridgeFor KT88, 6550A, EL156 PP ×2฿17,000
ISO MS-4042DMade in Japan
Secondaries
0–20–360–400 V AC 0.72 A (DC bridge 420 mA) · 70 V AC 60 mA · 6.3 V 4 A ×2 · 6.3 V 3 A ×2
Application
KT88, 6550A, EL156 PP ×2
Size
W125×D125×H138 mm (under chassis 36 mm)
Weight
9.0 kg
Ask about MS-4042DPrimary wound for your mains voltage at no extra charge.
MS-4016D370–400 V doubler · 10 V filamentsFor 211, 845 SE ×2฿16,500
ISO MS-4016DMade in Japan
Secondaries
0–370–400 V AC 0.6 A (DC voltage doubler 160 mA) · 150–0–150 V AC 60 mA · 10 V 5 A ×2 · 6.3 V 2 A ×2
Application
211, 845 SE ×2
Size
W125×D125×H114 mm (under chassis 36 mm)
Weight
8.0 kg
Ask about MS-4016DPrimary wound for your mains voltage at no extra charge.
MS-1913D145–185 V · voltage doubler 350 mAFor KT88, KT66, EL34 PP ×2฿14,300
ISO MS-1913DMade in Japan
Secondaries
0–10–145–165–185 V AC 1.3 A (DC voltage doubler 350 mA) · 65 V AC 0.15 A · 6.3 V 3.6 A ×2 · 6.3 V 2.5 A ×2
Application
KT88, KT66, EL34 PP ×2
Size
W125×D125×H114 mm (under chassis 36 mm)
Weight
7.7 kg
Ask about MS-1913DPrimary wound for your mains voltage at no extra charge.
MS-4023DⅡ360–400 V CT · 250 mAFor 300B SE ×2, KT88 PP ×1฿14,000
ISO MS-4023DⅡMade in Japan
Secondaries
400–360–0–100–360–400 V AC 0.23 A (DC CT tube 250 mA / Si 220 mA) · 5 V 3.5 A ×2 · 0–6.3–10 V 3.5 A · 0–5–6.3 V 3.5 A
Application
300B SE ×2, KT88 PP ×1
Size
W125×D125×H114 mm (under chassis 36 mm)
Weight
7.3 kg
Ask about MS-4023DⅡPrimary wound for your mains voltage at no extra charge.
ISO Choke coils

Choke coils

โช้คคอยล์

Filter chokes for capacitor-input and choke-input power supplies.

LC-15-150DⅡ15 H · 150 mAFor Capacitor-input filter฿5,100
ISO LC-15-150DⅡMade in Japan
Rating
15 H 150 mA
Max current
200 mA
DC resistance
165 Ω
Application
Capacitor-input filter
Size
W85×D80×H105 mm
Weight
2.4 kg
Ask about LC-15-150DⅡStock varies; we confirm availability and delivery time.
LC-10-200DⅡ10 H · 200 mAFor Capacitor-input filter฿5,100
ISO LC-10-200DⅡMade in Japan
Rating
10 H 200 mA
Max current
260 mA
DC resistance
120 Ω
Application
Capacitor-input filter
Size
W85×D80×H105 mm
Weight
2.4 kg
Ask about LC-10-200DⅡStock varies; we confirm availability and delivery time.
LC-5-250DⅡ5 H · 250 mAFor Capacitor-input filter฿5,100
ISO LC-5-250DⅡMade in Japan
Rating
5 H 250 mA
Max current
330 mA
DC resistance
67 Ω
Application
Capacitor-input filter
Size
W85×D80×H105 mm
Weight
2.4 kg
Ask about LC-5-250DⅡStock varies; we confirm availability and delivery time.
LC-3-350DⅡ3 H · 350 mAFor Capacitor-input filter฿5,100
ISO LC-3-350DⅡMade in Japan
Rating
3 H 350 mA
Max current
450 mA
DC resistance
42 Ω
Application
Capacitor-input filter
Size
W85×D80×H105 mm
Weight
2.4 kg
Ask about LC-3-350DⅡStock varies; we confirm availability and delivery time.
LE-12-150D12 H · 150 mAFor Capacitor-input filter, compact฿4,500
ISO LE-12-150DMade in Japan
Rating
12 H 150 mA
Max current
170 mA
DC resistance
180 Ω
Application
Capacitor-input filter, compact
Size
W78×D72×H95 mm
Weight
1.8 kg
Ask about LE-12-150DStock varies; we confirm availability and delivery time.
LE-8-200D8 H · 200 mAFor Capacitor-input filter, compact฿4,500
ISO LE-8-200DMade in Japan
Rating
8 H 200 mA
Max current
230 mA
DC resistance
125 Ω
Application
Capacitor-input filter, compact
Size
W78×D72×H95 mm
Weight
1.8 kg
Ask about LE-8-200DStock varies; we confirm availability and delivery time.
LE-5-250D5 H · 250 mAFor Capacitor-input filter, compact฿4,500
ISO LE-5-250DMade in Japan
Rating
5 H 250 mA
Max current
300 mA
DC resistance
80 Ω
Application
Capacitor-input filter, compact
Size
W78×D72×H95 mm
Weight
1.8 kg
Ask about LE-5-250DStock varies; we confirm availability and delivery time.
LL-20-150D20 H · 150 mA · choke inputFor Choke-input filter (also capacitor-input)฿8,400
ISO LL-20-150DMade in Japan
Rating
20 H 150 mA
Max DC current
200 mA
DC resistance
220 Ω
Max AC voltage
700 V
Min current (Imin)
35 mA
Application
Choke-input filter (also capacitor-input)
Size
W85×D80×H105 mm
Weight
2.4 kg
Ask about LL-20-150DStock varies; we confirm availability and delivery time.
LL-12-200D12 H · 200 mA · choke inputFor Choke-input filter (also capacitor-input)฿8,400
ISO LL-12-200DMade in Japan
Rating
12 H 200 mA
Max DC current
260 mA
DC resistance
145 Ω
Max AC voltage
600 V
Min current (Imin)
50 mA
Application
Choke-input filter (also capacitor-input)
Size
W85×D80×H105 mm
Weight
2.4 kg
Ask about LL-12-200DStock varies; we confirm availability and delivery time.
LL-5-300D5 H · 300 mA · choke inputFor Choke-input filter (also capacitor-input)฿8,400
ISO LL-5-300DMade in Japan
Rating
5 H 300 mA
Max DC current
350 mA
DC resistance
55 Ω
Max AC voltage
500 V
Min current (Imin)
100 mA
Application
Choke-input filter (also capacitor-input)
Size
W85×D80×H105 mm
Weight
2.4 kg
Ask about LL-5-300DStock varies; we confirm availability and delivery time.
ISO W choke (2 windings)

W choke (2 windings)

โช้คคอยล์ 2 ขดลวด

Two-winding chokes for capacitor-input supplies. Windings can be used in series or in parallel, never alone.

RC-160-15W160 H 15 mA (40 H 30 mA)For Capacitor-input filter฿4,500
ISO RC-160-15WMade in Japan
Rating
160 H 15 mA (40 H 30 mA in parallel)
Max current
20 mA (40 mA)
DC resistance
1,160 Ω (290 Ω)
Application
Capacitor-input filter
Ask about RC-160-15WStock varies; we confirm availability and delivery time.
RC-60-35W60 H 35 mA (15 H 70 mA)For Capacitor-input filter฿4,500
ISO RC-60-35WMade in Japan
Rating
60 H 35 mA (15 H 70 mA in parallel)
Max current
50 mA (100 mA)
DC resistance
730 Ω (183 Ω)
Application
Capacitor-input filter
Ask about RC-60-35WStock varies; we confirm availability and delivery time.
RC-10-130W10 H 130 mA (2.5 H 260 mA)For Capacitor-input filter฿4,500
ISO RC-10-130WMade in Japan
Rating
10 H 130 mA (2.5 H 260 mA in parallel)
Max current
150 mA (300 mA)
DC resistance
130 Ω (33 Ω)
Application
Capacitor-input filter
Ask about RC-10-130WStock varies; we confirm availability and delivery time.
RC-28-80W28 H 80 mA (7 H 160 mA)For Capacitor-input filter฿4,500
ISO RC-28-80WMade in Japan
Rating
28 H 80 mA (7 H 160 mA in parallel)
Max current
90 mA (180 mA)
DC resistance
360 Ω (90 Ω)
Application
Capacitor-input filter
Ask about RC-28-80WStock varies; we confirm availability and delivery time.
ISO Plate / driver choke

Plate / driver choke

เพลทโช้ค

High-inductance chokes for plate or cathode loading of driver tubes, also usable as B+ filter chokes.

LCP-60-80D60 H · 80 mAFor Driver plate or cathode choke · B+ filter฿8,400
ISO LCP-60-80DMade in Japan
Rating
60 H 80 mA
Max current
100 mA
Response (−1 dB)
7 Hz – 300 kHz (4 V, rp = 1 kΩ)
DC resistance
570 Ω
Application
Driver plate or cathode choke · B+ filter
Ask about LCP-60-80DStock varies; we confirm availability and delivery time.
LCP-100-60D100 H · 60 mAFor Driver plate or cathode choke · B+ filter฿8,400
ISO LCP-100-60DMade in Japan
Rating
100 H 60 mA
Max current
100 mA
Response (−1 dB)
7 Hz – 300 kHz (4 V, rp = 1 kΩ)
DC resistance
570 Ω
Application
Driver plate or cathode choke · B+ filter
Ask about LCP-100-60DStock varies; we confirm availability and delivery time.

Prices are final retail prices in Thai Baht, including import handling, for delivery in Thailand. Specifications from the ISO Transformers catalogue (Nov 2024). Overseas buyers, please ask for a quote.