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1: Amplifier & Kits
2: Electronic
3: Chassis & Accessories
4: Cables & Wires
5: Tube
6: Tube Socket
7: Transformer & Iron
  • Choke
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  • Entry level transformer
  • Filament Power
  • James Transformer
  • Mars Interstage
  • Mars Power & choke
  • Mars PP Output
  • Mars SE output
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  • 8: Tools
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    13: Photo Gallery

    Current News

    FAQ (Ordering)

    New Arrival

    SPC-950B-CU
    SPC-950B (Solid CU)
    PC-CP-8
    PC-CP-3
    PC-CP-14P
    PB-K8AL-S
    PB-K6AL-S
    PB-K4AL-S
    YA-SP1700
    YA-C16-OCC
    YA-77-OCC
    T-40-9999
    Custom made High quality 40VA Toroidal transformer
    T-25-9999
    Custom made High quality 25W Toroidal transformer
    SPC-800B
    KB-CU-35G
    LM-9902U
    RCA-YA-73R
    RCA-YA-51
    WS-Solder-Roll
    JS-6113HS
    JS-6112HS
    KB-CU-25RG
    NEO-18
    NYM 06-BG
    Nylon mesh - Black color with Gold wire (Photo to be available soon)
    RCA-CP-01-C
    RCA-CP-805
    T-200-9999
    Custom made High quality Toroidal transformer 200VA
    SPC-YA-76C
    LM-330B-EU-C
    XLR-KT-M
    XLR-KT-F
    KB-CU-26G
    T-100-9999
    Custom made High quality Toroidal transformer
    T-1000-9999
    Custom made High quality Toroidal transformer 1000VA
    050-10H200TC
    10H 200mA twin-coil
    AV225
    050-5KSE-Z11
    050-3.5KSE-Z11
    3.5k SE Audio transformer for tube Audio project, Z11 Lamination version (to be available soon)
    PB-BR06CU
    030-5KSE-CT
    5k SE Audio transformer for tube Audio project
    050-3H320
    3H 320mA
    SPC-YA-75C
    XLR-KT
    XLR-GLFR
    T-600-9999
    Custom made High quality Toroidal transformer 600VA
    T-800-9999
    Custom made High quality Toroidal transformer 800VA
    T-500-9999
    Custom made High quality Toroidal transformer 500VA
    T-400-9999
    Custom made High quality Toroidal transformer 400VA
    Dark Phoenix wide
    LM-9903U
    CH-BL-22CU
    WS100-SE
    AWG 18,
    1mm diameter 99.99% Pure Silver Enamelled Wire
    WS050-SE
    AWG 22,
    0.5mm diameter 99.99% Pure Silver Enamelled Wire
    WS010-SE
    AWG 38,
    0.1mm diameter 99.99% Pure Silver Enamelled Wire
    SPC-GLFR-560
    SPC-GLFR-960
    RCA-YA-120R
    RCA-YA-GFAL
    RCA-YA-GLFR
    RCA-YA-GFAL2
    SPC-AR-CU
    AV38G-P
    AV38G
    AV38 Heavy Duty Chassis for integrated amplifier or pre-amplifier (Champagne gold color version)
    T-25-6350-EU
    COT-7050
    SPC-V16X
    HSS-050
    50mm drill bit
    AR-998S
    AR-998G
    AR-998B
    PP-10G
    PP-07G
    PP-05G
    PP-03G
    T-25-6350-US
    High quality Toroidal transformer for general tube filament
    T-25-50-US
    High quality Toroidal transformer for 300 filament
    T-40-100-US
    High quality Toroidal transformer for 845 filament
    T-40-100-EU
    High quality Toroidal transformer for 845 filament
    T-25-50-EU
    High quality Toroidal transformer for 300 filament
    YA-2250S
    YA-12-OCC
    SPC-V22-SC
    SPC-FV90
    OFC-12R
    OFC-12G
    OFC-12B
    GY-PW9000
    GY-PW8000
    RCA-YA-52
    CH-AL-22
    AL-421S
    PC-IEC-Socket-CU-R
    KB-AL3421G
    KB-AL3421B
    AV285B
    AV285B-FP
    Front in-filled plate replacement for AV285B Heavy duty Chassis (black color)
    AV229-S
    SILK-540
    SILK-755
    SILK-975
    SILK-1110
    PC-US-YAAL-CU
    PC-IEC-YAAL-CU
    PC-EU-YAAL-CU
    SPC-YA-878R
    SPC-YA-878CU
    SPC-YA-78S
    PB-12N
    AL-421B
    AV228-G
    AV228-G Heavy duty Chassis for Pre/Integrated/Power Amplifier (Champagne gold color version)
    AV228-B
    AV228-B Heavy duty Chassis for Pre/Integrated/Power Amplifier (Black color version)
    AV229-B
    AV229-B Heavy duty Chassis for Pre/Integrated/Power Amplifier (Black color version)
    AV229-G
    AV229-G Heavy duty Chassis for Pre/Integrated/Power Amplifier (Champagne gold color version)
    AV38B
    AV38 Heavy Duty Chassis for integrated amplifier or pre-amplifier (Back color version)
    HS-65T
    PC-YA-20/16A-GFAL-R
    RCA-CP-Ceramic
    PC-EU-GFAL-R
    AV38B-P
    AV38 Heavy Duty Chassis for Power amplifier (Back color version)
    AV38S-P
    AV38 Heavy Duty Chassis for Tube power amplifier
    PW-IEC-YA-R
    CH-TC-100AL-B
    SPC-YA-78C
    PC-IEC-Socketplate-Graphite
    PC-IEC-GFAL-R
    PC-US-GFAL-R
    RCA-YA-33P
    RCA-YA-13P
    PC-IEC-Socket-CU
    PC-IEC-YAAL-CU2
    PC-US-YAAL-CU2
    PC-YA-20/16A-CU
    PC-YA-20/16A-CU-T
    KB-AL48XB
    PC-EU-TR
    PB-208N
    LM-9901U
    PC-IEC-YA-CUR
    PC-US-YA-CUR
    JS-2002NM
    JS-2008NM
    JS-6159HF-B
    KB-AL-18RS
    KB-AL-18RB
    KB-AL35XS
    KB-AL31XB
    KB-AL31XS
    PC-IEC-YA
    PC-IEC-YAT
    PC-US-YAT
    AV200-G
    AV200-G Heavy duty Chassis for Power AMP (Champagne gold color version)
    AV200-B
    AV200-B Heavy duty Chassis for Power AMP (Black color version)
    CH-TC-70AL-B
    PC-EU-YATS
    PSU-A19-PCB
    PRA-800G
    PRA-800 Heavy duty Chassis for Pre/Integrated/Power Amplifier - Champagne gold color
    003TF20-EU
    050-5KSE-CT
    050-20H125
    20H 125mA
    LM-130E
    CH-TC-100AL-S
    AV68
    YA-2250S-roll
    RCA-ACE-wood
    KB-CU-25G
    Silver Arm wire 225
    Tapper 4
    Tapper 3
    Tapper 2.5
    Tapper 6
    Tapper 5
    JS-2025NL-G
    SPC-06AG
    PB-203AL-S
    PB-204AL-S
    PB-202AL-S
    PW-IEC-03G
    PC-IEC-Socket2
    CH-BL-1620
    Super PUP
    PB-212N
    PB-230N
    CH-BL-rings
    KB-AL26XS
    LM-9803
    150W Power transformer recommend for most tube power amplifier
    A2001B-S
    A2001B-G
    A2001B-B
    Dark Ebony Board
    SPC-Yarbo-1001G-Y
    SPC-Yarbo-1002G
    SPC-ACE-69G
    SPC-ACE-69S
    PRA-800S
    BFA-YA-75G
    BFA-YA-75S
    SPC-YA-55G
    XLR-200MG
    XLR-200FG
    XLR-800FG
    XLR-800MG
    XLR-FB
    XLR-MB
    TS-CM07BG-teflon
    TS-CM09BG-teflon
    TS-CM08BG-teflon
    TS-CM04BG-teflon
    SPC-YA-77R
    COT-70
    CH-BL-22
    RCA-ACE-01G
    CH-BL-quad16
    CH-BL-27CU
    CH-BL-20CU
    AL-314B
    AL-314B Full Aluminum chassis for Pre-amp or small power amp - Black color version (Structural same as AL-314)
    NYM 06-grey
    NYM 06-RGB
    NYM 06-White
    NYM 08-BG
    SPC-ACE-wood
    YA-63MG
    YA-63A-MG
    TS-CL04BG-teflon
    SPC-YA-ZG
    5U4G (5z3p) China NOS
    CH-TC-70AL-S
    PC-US-YA
    300BZ Shuguang
    CH-column
    DS-F79G
    James Transformer
    Mid-High end audio transformer.
  • James Audio transformer are well know since 1990. Comparable to High-end Japan transformer. They sold to Japan market since 1995. Their transformer tested by us for excellent price and performance ratio. Excellent potted appearance and stable quality.;
  • 9 Item(s) found System time: Thu 02 Oct 2014 08:19 am
    JS-2002NM
    James Nickel core interstage transformer for Push Pull 5k:5k (1+1:1+1)
  • James model JS-2002NM
  • N means "Nickel" Core Lamination is Nickel alley
  • M means "Nomex" isolation material
  • Fully Potted
  • P.P 5K (1+1:1+1)
  • 10Hz~80KHz-1dB
  • Primary current 80mA
  • Base plate size 72 x 72mm
  • Screw holes on base plate is 59mm x 59mm center to center
  • Made in Taiwan
  • Weight :2450 (gram/pair)
  • Size (mm): 85H x 72 diameter
  • Brand : James
  • Item No: JS-2002NM
    Quantity (pair)Price (US$)
    1 - 2590.00
    3 - 9550.00
    10 or more530.00
    JS-2002NM(#648) last update on 07/Nov/2011, at 2:48 pm

    JS-2008NM
    James Nickel core interstage transformer for Single ended 5k:5k
  • JS-2008NM
  • N means "Nickel" Core Lamination is Nickel alley
  • M means "Nomex" isolation material
  • Fully Potted
  • B.P 5K(1:1 CT)
  • 16Hz~40KHz-2dB
  • Primary current 30mA
  • Base plate size 72 x 72mm
  • Screw holes on base plate is 59mm x 59mm center to center
  • Made in Taiwan
  • Weight :2450 (gram/pair)
  • Size (mm): 85H x 72 diameter
  • Brand : James
  • Item No: JS-2008NM
    Quantity (pair)Price (US$)
    1 - 3590.00
    4 - 19550.00
    20 or more530.00
    JS-2008NM(#647) last update on 07/Nov/2011, at 2:48 pm

    JS-2025NL-G
    James MC step-up transformer JS-2025NL - champagne gold color (Limited supply)
  • Perfectly match with 3, 5, 24 and 40 ohm MC phono head
  • James model JS-2025NL - champagne gold color
  • 40% Nickel Core
  • 3/5/24/40:5k ohm
  • Frequency Respond: -

  • 3:5K 5Hz~40KHz -1dB
  • 5:5K 5Hz~41KHz -1dB
  • 24:5K 8Hz~39KHz -1dB
  • 40:5K 9Hz~42KHz -1dB
  • THD: -

  • 10Hz 0.015%
  • 100Hz 0.01%
  • 1000Hz 0.01%
  • 10kHz 0.01%

  • Fully Potted
  • Factory matched pair
  • Come with inter-case mount kit
  • Screw holes on base plate is 40mm x 40mm center to center
  • Made in Taiwan
  • Weight :670 (gram/Pair)
  • Size (mm): 47 diameter x 54H
  • Brand : James
  • Extg Stock: 2 Pair
  • Item No: JS-2025NL-G
    Quantity (Pair)Price (US$)
    1 - 3320.00
    4 - 19300.00
    20 or more290.00
    JS-2025NL-G(#751) last update on 23/Feb/2011, at 9:56 am

    JS-3010NM
    James Nickel core pre-amp output transformer for SE 10k:600 (4:1)
  • Designed for 6SN7, 6J5 and similar tubes
  • James model JS-2010NM
  • N means "Nickel" Core Lamination is Nickel alley
  • M means "Nomex" isolation material
  • Fully Potted
  • BP 10K CT : 600 CT
  • 15Hz~38KHz-2dB
  • Primary current 20mA
  • Secondary current 110mA
  • Base plate size 72 x 72mm
  • Screw holes on base plate is 59mm x 59mm center to center
  • Made in Taiwan
  • Weight :2450 (gram/pair)
  • Size (mm): 85H x 72 diameter
  • Brand : James
  • Item No: JS-3010NM
    Quantity (pair)Price (US$)
    1 - 2590.00
    3 - 9550.00
    10 or more530.00
    JS-3010NM(#711) last update on 07/Nov/2011, at 2:48 pm

    JS-6112HS
    James output transformer Single Ended 2.5/3.5k: 0-4-8ohm
  • James model JS-6112HS
  • Factory matched pair
  • 29Hz~50KHz-2dB
  • Maximum working current for primary: 70mA
  • Recommended for 2A3
  • Base plate size 72 x 72mm
  • Screw holes on base plate is 59mm x 59mm center to center
  • Made in Taiwan
  • Weight :2600 (gram/pair)
  • Size (mm): 85H x 72 diameter
  • Brand : James
  • Item No: JS-6112HS
    Quantity (pair)Price (US$)
    1 - 2160.00
    3 - 9155.00
    10 or more150.00
    JS-6112HS(#1014) last update on 27/Dec/2013, at 9:41 am

    JS-6113HS
    James output transformer Single Ended 3.5/5k: 0-4-8ohm
  • James model JS-6113HS
  • Factory matched pair
  • 27Hz~60KHz-2dB
  • Maximum working current for primary: 60mA
  • Recommended for 6V6
  • Base plate size 72 x 72mm
  • Screw holes on base plate is 59mm x 59mm center to center
  • Made in Taiwan
  • Weight :2600 (gram/pair)
  • Size (mm): 85H x 72 diameter
  • Brand : James
  • Item No: JS-6113HS
    Quantity (pair)Price (US$)
    1 - 2160.00
    3 - 9155.00
    10 or more150.00
    JS-6113HS(#1013) last update on 27/Dec/2013, at 9:41 am

    JS-6123HS-B
    James output transformer for Single ended 2.5/3.5/5k - Black color version
  • JS-6123HS - black color version
  • 2.5/3.5/5k:4/8/16ohm
  • Maximum 90mA
  • Fully Potted
  • 20Hz~60KHz-2dB
  • Screw holes on base plate is 65mm x 74mm center to center
  • Made in Taiwan
  • Weight :6400 (gram/Pair)
  • Size (mm): 80 x 90 x 110H
  • Brand : James
  • Power: 20 Watt
  • Item No: JS-6123HS-B
    Quantity (Pair)Price (US$)
    1 - 3235.00
    4 - 19225.00
    20 or more220.00
    JS-6123HS-B(#651) last update on 27/Dec/2013, at 4:17 pm

    JS-6123HS-G
    James output transformer for Single ended 2.5/3.5/5k - champagne gold color
  • JS-6123HS - champagne gold color
  • 2.5/3.5/5k:4/8/16ohm
  • Maximum 90mA
  • Fully Potted
  • 20Hz~60KHz-2dB
  • Screw holes on base plate is 65mm x 74mm center to center
  • Made in Taiwan
  • Weight :6400 (gram/Pair)
  • Size (mm): 80 x 90 x 110H
  • Brand : James
  • Power: 20 Watt
  • Item No: JS-6123HS-G
    Quantity (Pair)Price (US$)
    1 - 3235.00
    4 - 19225.00
    20 or more220.00
    JS-6123HS-G(#722) last update on 27/Dec/2013, at 4:18 pm

    JS-6159HF-B
    James output transformer for 211/845 Single ended 10k - Black color version
  • JS-6159HF - black color version
  • Factory Matched pair
  • 10k:4/8/16ohm
  • Primary 70mA
  • Fully Potted
  • 20Hz~35KHz-2dB
  • Screw holes on base plate is 80mm x 80mm center to center
  • Made in Taiwan
  • Weight :12600 (gram/Pair)
  • Size (mm): 106 x 96 x 150H
  • Brand : James
  • Power: 50 Watt
  • Item No: JS-6159HF-B
    Quantity (Pair)Price (US$)
    1 - 3690.00
    4 - 19650.00
    20 or more635.00
    JS-6159HF-B(#750) last update on 07/Nov/2011, at 2:48 pm

    Items
    Out-of-Stock

    NYM 06-Purple
    PSC-V807R-15
    LM260-500
    SPC-858M-CU
    LM-9905U
    R0026-009
    TS-CM08CG
    SW-3 (ITT-NOS)
    SPC-01PW
    SPC-55PW
    TS-CM04-08VB
    PC-IEC-TB
    PC-IEC-TG
    SPC-YA-77C
    RCA-GY-FG
    SCC-20
    TS-CM09CGS
    Dark Phoenix
    LM-9904U
    LM-9907U
    LM-9908U
    LM-9906U
    T-500-EU
    Separation and Voltage matching transformer.
    Silver Master 2
    LM-2013U
    NYM 06-BGS
    211B Shuguang
    RCA-GY-FRH
    LM-2017U
    VR-S32G
    PSC-V701R-15
    KB-BE-42
    PP-01-Teflon
    LM-5H-2C

    Items
    On Sale

    RCA-CP-Ceramic
    SPC-V8-silver
    LM-2014U
    LM-2012U
    LM-9911U-B
    LM-9902U

    VT4C STUDIO
    Correspond Address: PO BOX 70837 Kowloon Central Post Office, Hong Kong
    Address: Room 1405, Block B, Vigor Industrial Building, 14-20 Cheung Tat Road, Tsing Yi, Hong Kong
    www.vt4c.com
    FAX: (852) 2495 3415
    E-mail:sale@vt4c.com
    All informations subject to Change without note!