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Email: sale@vt4c.com
James Transformer NOS

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Main Menu
0: How to Buy?
1: Amplifier & Kits
2: Electronic
3: Chassis & Accessories
  • Accessories
  • Aluminum & Copper Plate
  • Aluminum case
  • Ebony Wooden chassis
  • Hellfire case
  • Knobs
  • Power Bar
  • RCA Socket
  • Screw, bolt & nuts
  • Speaker Cable Terminal
  • Steel + Aluminum case
  • Switch, Selector, Volume
  • Transformer cover
  • Tube protection frames
  • XLR socket
  • 4: Cables & Wires
    5: Tube
    6: Tube Socket
    7: Transformer & Iron
    8: Tools
    9: Links
    10: News
    11: FAQ
    12: DIY Hints Book
    13: Photo Gallery

    Current News

    FAQ (Ordering)

    New Arrival

    TS-CM09BG-teflon
    CH-column
    GY-PW9000
    JS-6133HS-B
    James output transformer for Single ended 3.5k - black color
    JS-5-200C
    James potted Choke 5H 200mA
    JS-2002NM
    JS-10-200S
    James potted Choke 10H 200mA
    CH-AL-22
    SPC-950-B
    T-25-50-US
    High quality Toroidal transformer for 300 filament
    T-25-50-EU
    High quality Toroidal transformer for 300 filament
    050-5KSE-CT
    050-5KPP-Z11
    050-3H320
    3H 320mA
    050-20H125
    20H 125mA
    050-10H200TC
    10H 200mA twin-coil
    PB-204AL-B
    PB-203AL-B
    PB-202AL-B
    AL-430RII-S
    030-5k:5+5k Z11
    5k: 5+5k interstage transformer as phase-splitter for Push-Pull
    AV-LEG
    Anti-vibration Leg for AV-series Chassis (Gold color version)
    050-3.5KSE-Z11
    3.5k SE Audio transformer for tube Audio project, Z11 Lamination version (to be available soon)
    SPC-V16X
    SPC-YA-75R
    YA Audio Spade - Pure Copper with Rhodium plated version (Similar to SPC-YA-75C, with Rhodium plated, photo to be available ASAP)
    SPC-YA-75C
    KB-AL48XB
    KB-AL35XS
    KB-AL3421G
    KB-AL3421B
    KB-AL31XS
    KB-AL31XB
    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
    LM260-500
    NEO-18
    SILK-1211
    12mm Pure Silk Tube for pure sound quality
    PB-BR06CU
    PP-10G
    PP-07G
    PP-05G
    PP-03G
    PB-212N
    PB-208N
    PB-230N
    PB-12N
    TS-CM08BG-teflon
    YA-12-OCC
    SPC-800B (Solid CU)
    LM-131V
    150W Hi-end quality transformer designed for 2A3 SE.
    YA-C16-OCC
    YA-77-OCC
    SPC-YA-78S
    SPC-YA-77R
    SPC-YA-78C
    SPC-YA-76C
    LM-130E
    YA-SP1700
    PRA-800S
    PRA-800G
    PRA-800 Heavy duty Chassis for Pre/Integrated/Power Amplifier - Champagne gold color
    AV68
    AV38S-P
    AV38 Heavy Duty Chassis for Tube power amplifier
    AV38G-P
    AV38G
    AV38 Heavy Duty Chassis for integrated amplifier or pre-amplifier (Champagne gold color version)
    AV38B-P
    AV38 Heavy Duty Chassis for Power amplifier (Back color version)
    AV38B
    AV38 Heavy Duty Chassis for integrated amplifier or pre-amplifier (Back color version)
    AV285B
    AV229-S
    AV229-G
    AV229-G Heavy duty Chassis for Pre/Integrated/Power Amplifier (Champagne gold color version)
    AV229-B
    AV229-B Heavy duty Chassis for Pre/Integrated/Power Amplifier (Black color version)
    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)
    AV225
    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)
    AR-998S
    AR-998G
    AR-998B
    A2001B-S
    A2001B-G
    A2001B-B
    PW-IEC-03G
    CH-TC-70AL-S
    CH-TC-70AL-B
    CH-TC-100AL-S
    AL-421S
    AL-421B
    SPC-950B (Solid CU)
    PC-CP-3
    PC-CP-14P
    PB-K8AL-S
    PB-K6AL-S
    PB-K4AL-S
    T-40-9999
    Custom made High quality 40VA Toroidal transformer
    T-25-9999
    Custom made High quality 25W Toroidal transformer
    KB-CU-35G
    RCA-YA-73R
    RCA-YA-51
    WS-Solder-Roll
    KB-CU-25RG
    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
    LM-330B-EU-C
    XLR-KT-M
    XLR-KT-F
    KB-CU-26G
    T-1000-9999
    Custom made High quality Toroidal transformer 1000VA
    050-5KSE-Z11
    030-5KSE-CT
    5k SE Audio transformer for tube Audio project
    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
    CH-BL-22CU
    SPC-GLFR-560
    SPC-GLFR-960
    RCA-YA-120R
    RCA-YA-GFAL
    RCA-YA-GLFR
    RCA-YA-GFAL2
    SPC-AR-CU
    T-25-6350-EU
    HSS-050
    50mm drill bit
    T-25-6350-US
    High quality Toroidal transformer for general tube filament
    T-40-100-US
    High quality Toroidal transformer for 845 filament
    T-40-100-EU
    High quality Toroidal transformer for 845 filament
    YA-2250S
    SPC-V22-SC
    OFC-12R
    OFC-12G
    OFC-12B
    RCA-YA-52
    PC-IEC-Socket-CU-R
    AV285B-FP
    Front in-filled plate replacement for AV285B Heavy duty Chassis (black color)
    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
    HS-65T
    PC-YA-20/16A-GFAL-R
    RCA-CP-Ceramic
    PC-EU-GFAL-R
    PW-IEC-YA-R
    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
    PC-EU-TR
    PC-IEC-YA-CUR
    PC-US-YA-CUR
    KB-AL-18RS
    KB-AL-18RB
    PC-IEC-YA
    PC-IEC-YAT
    PC-US-YAT
    PC-EU-YATS
    PSU-A19-PCB
    003TF20-EU
    YA-2250S-roll
    KB-CU-25G
    Tapper 4
    Tapper 3
    Tapper 2.5
    Tapper 6
    Tapper 5
    SPC-06AG
    PC-IEC-Socket2
    CH-BL-1620
    Super PUP
    CH-BL-rings
    KB-AL26XS
    LM-9803
    150W Power transformer recommend for most tube power amplifier
    Dark Ebony Board
    SPC-ACE-69G
    SPC-ACE-69S
    BFA-YA-75G
    BFA-YA-75S
    XLR-200MG
    XLR-200FG
    XLR-800FG
    XLR-800MG
    XLR-FB
    XLR-MB
    TS-CM07BG-teflon
    TS-CM04BG-teflon
    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
    5U4G (5z3p) China NOS
    PC-US-YA
    300BZ Shuguang
    DS-F79G
    Accessories
    Anti-virbation support pin, LP accessary, electronic parts supporting pin, misc sockets and plugs.
    23 Item(s) found System time: Sun 25 Jun 2017 04:49 pm
    Dark Ebony Board
    50mm (2") Black Ebony Solid wooden Board with different directional layer.
  • For real Audiophiles
  • Made of Africa ebony (black ebony) solid wood
  • Two 25mm layer solid ebony wood in different grain directional to split the vibration energy.
  • Limited supply due to shortage of the black ebony wood.
  • Natural Wood grain different with every board.

  • Size fit most famous brand HiFi rack/frame

  • Below is EMS shipping cost of Dark Phoenix Board for your reference.

    One board / Two board a package: -
  • Australia US$154/226
  • Most Europe US$164/226
  • Japan US$134/156
  • USA and Canada US$156/267
  • Korea/Malaysia/Singapore US$78/133
  • Most Asia US$78/133
  • Russian US$290/362


  • Weight :11500 (gram/Each)
  • Size (mm): 480 x 430 x 50
  • Extg Stock: 9 Each
  • Item No: Dark Ebony Board
    Quantity (Each)Price (US$)
    1 - 1400.00
    2 - 5350.00
    6 or more320.00
    Dark Ebony Board(#590) last update on 13/Oct/2010, at 12:20 pm

    Dark Ebony Board (More photo)
    Black Ebony Solid wooden Board (More photos)
  • Natural Wood grain different.
  • Dark Ebony Board (More photo)(#591) last update on 16/Jun/2009, at 2:52 pm

    EXT-KIT-26
    Extend kit for Front planel 260mm(10 1/4") rob
  • Design for Apls Volume VR or Selector from rear to Front Panel.
  • Brass connector with Stainless screw.
  • Additional Screw for mounting on front panel smooth and easier.
  • L-shape mount fit most other brand's VR/switch
  • One adjustable mounting angle included, size 50mm x 12mm angle with 28mm wide
  • Weight :35 (gram/Set)
  • Item No: EXT-KIT-26
    Quantity (Set)Price (US$)
    1 - 36.00
    4 - 195.20
    20 or more4.50
    EXT-KIT-26(#299) last update on 28/Apr/2015, at 1:04 pm

    EXT-KIT-30
    Extend kit for Front planel 300mm (12") rob
  • Same as EXT-KIT-26, with the rob long 300mm(12")
  • Design for Apls Volume VR or Selector from rear to Front Panel.
  • Brass connector with Stainless screw.
  • Additional Screw for mounting on front planel smooth and easier.
  • Mount fit most other brand's VR/switch
  • One adjustable mounting angle included, size 50mm x 12mm angle with 28mm wide
  • Weight :38 (gram/Set)
  • Item No: EXT-KIT-30
    Quantity (Set)Price (US$)
    1 - 36.20
    4 - 195.80
    20 or more5.20
    EXT-KIT-30(#300) last update on 28/Apr/2015, at 1:04 pm

    LP-WEIGHT-60
    Top quality Stainless Steel weight unit for Turn-Table
  • A heavy unit to make your LD more stable and reduce unnecessary vibration on LP
  • Weight :380 (gram/each)
  • Size (mm): 60 diameter
  • Brand : YA Audio
  • Item No: LP-WEIGHT-60
    Quantity (each)Price (US$)
    1 - 328.00
    4 - 925.00
    10 or more22.00
    LP-WEIGHT-60(#538) last update on 09/Jan/2015, at 10:15 am

    NEO-18
    18 inch Mid-woofer driver 98dB (Driver only, Not include cabinet and tweeter)
  • Custom made 18" woofer
  • Effective frequency range 35Hz-3000Hz
  • Recommended frequency range 35-1800Hz
  • Recommended cross-over frequency: 800-1800Hz
  • NEO Magnet, the strongest permanent magnet
  • QTWT Cabinet design provided with the driver
  • Front horn Tweeter sell separately (NOT included)
  • Nominal diameter: 460mm/18in
  • Nominal impedance: 8 ohm
  • Power rating: 650W RMS
  • Sensitivity(1W/1M): 98dB±2dB
  • Voice coil dimension: 100mm
  • Magnet dimension: 90mm dia*10mm
  • Resonant frequency,FS: 31Hz
  • D.C.Voice coil resistance,Re: 7.2ohm
  • Mechanical quality factor,Qms: 4.2
  • Electrical quality factor,Qes: 0.28
  • Total quality factor,Qts: 0.26
  • Equivalent air volume to Cms,Vas: 252L
  • Overall diameter: 462mm
  • Bolt circle diameter: 442mm
  • Baffle cutout diameter:
  • 422mm Depth: 203mm
  • Net weight: 6.2kg
  • Frequency range 35-3000Hz
  • BL factor ,BL 28 N/A
  • Voice coil material Aluminum
  • Weight :7300 (gram/each)
  • Item No: NEO-18
    Quantity (each)Price (US$)
    1 - 2240.00 120.00
    3 - 4225.00 120.00
    5 - 9210.00 120.00
    10 or more198.00 120.00
    NEO-18(#1010) last update on 01/Sep/2015, at 10:48 am

    PB-12N
    12 pin Nickel plated brass mounting pin Strip
  • 1mm Fiber glass board
  • Nickel plated non magnetic brass connecting pin
  • Weight :11 (gram/each)
  • Item No: PB-12N
    Quantity (each)Price (US$)
    1 - 44.00
    5 - 93.60
    10 - 993.30
    100 or more2.80
    PB-12N(#836) last update on 28/Apr/2015, at 12:59 pm

    PB-208N
    16 pins Nickel plated brass mounting pin Board
  • 1mm Fiber glass board
  • Pins and holes are both 10mm center to center
  • Around 3mm holes diameter
  • 2 x 8 Nickel plated non magnetic brass connecting pin
  • Weight :32 (gram/each)
  • Size (mm): 110 x 55
  • Item No: PB-208N
    Quantity (each)Price (US$)
    1 - 45.00
    5 - 94.50
    10 - 993.90
    100 or more3.50
    PB-208N(#840) last update on 28/Apr/2015, at 1:03 pm

    PB-212N
    24 pins Nickel plated brass mounting pin Board
  • 1mm Fiber glass board
  • 2 x 12 Nickel plated non magnetic brass connecting pin
  • Weight :50 (gram/each)
  • Item No: PB-212N
    Quantity (each)Price (US$)
    1 - 47.50
    5 - 96.50
    10 - 996.00
    100 or more5.60
    PB-212N(#841) last update on 28/Apr/2015, at 1:06 pm

    PB-230N
    60 pins Nickel plated brass mounting pin Board
  • 1mm Fiber glass board
  • 2 x 30 Nickel plated non magnetic brass connecting pin
  • Weight :108 (gram/each)
  • Item No: PB-230N
    Quantity (each)Price (US$)
    1 - 412.50
    5 - 911.00
    10 - 9910.00
    100 or more9.00
    PB-230N(#842) last update on 28/Apr/2015, at 1:00 pm

    PIN-BE-42
    Black Ebony Wooden PIN
  • Made of Black Ebony Wood
  • Best available wood for supporting pin.
  • Excellent balance and absorb non-natural energy.
  • Sound become pure and natural.
  • Rich of wood taste.
  • Much more details and better sound stage.
  • Using together with Stainless plate recommended.
  • Real Black Ebony is heavier than water. So, never floating!!
  • Size 42mm Diameter (1 3/4") 48mm tall (1 7/8")
  • Sell in set of 3 pieces
  • Weight :162 (gram/Set of 3)
  • Size (mm): 42 diameter 48 tall
  • Item No: PIN-BE-42
    Quantity (Set of 3)Price (US$)
    1 - 548.00
    6 - 1942.00
    20 - 9938.00
    100 or more35.00
    PIN-BE-42(#258) last update on 27/Mar/2007, at 1:51 pm

    PIN-BE-445
    Black Ebony Wooden leg set
  • Made of Black Ebony Wood
  • It is standard legs on our Hellfire kit/case
  • Best available wooden leg.
  • Come with Metal core and fixed screw.
  • Excellent balance and absorb non-natural energy.
  • Sound become pure and natural.
  • Rich of wood taste.
  • Much more details and better sound stage.
  • Real Black Ebony is heavier than water. So, never floating!!
  • Sell in set of 3 pieces
  • Weight :200 (gram/Set of 3)
  • Size (mm): 42 diameter 50 tall
  • Item No: PIN-BE-445
    Quantity (Set of 3)Price (US$)
    1 - 548.00
    6 - 1942.00
    20 - 9938.00
    100 or more35.00
    PIN-BE-445(#540) last update on 16/Jun/2009, at 2:49 pm

    PIN-SS-40
    Top quality Stainless Steel pin
  • Stainless steel import from Japan
  • Made of stainless Steel
  • Improve the Sound quality for more clean, sharp and details
  • Weight :125 (gram/each)
  • Size (mm): 40 diameter x 25mm height
  • Brand : YA Audio
  • Item No: PIN-SS-40
    Quantity (each)Price (US$)
    1 - 924.00
    10 - 4921.00
    50 or more18.00
    PIN-SS-40(#537) last update on 09/Jan/2015, at 10:17 am

    PIN-SS-60
    Top quality Stainless Steel pin
  • Made of top quality stainless Steel which import from Japan
  • Improve the Sound quality for more clean, sharp and details
  • Weight :213 (gram/each)
  • Size (mm): 60 diameter x 17
  • Brand : YA Audio
  • Item No: PIN-SS-60
    Quantity (each)Price (US$)
    1 - 929.00
    10 - 4925.00
    50 or more21.00
    PIN-SS-60(#539) last update on 09/Jan/2015, at 10:17 am

    PP-01-Teflon
    Nickel plated brass pin with Teflon supporting base
  • Top quality teflon base supporting pin to let you easy install small electronic by point-to-point connection/soldering easier.
  • Weight 1.8g each
  • M3 fixing screw included
  • Weight :9 (gram/Pack of 5)
  • Size (mm): 6 diameter x 27 long
  • Brand : YA Audio
  • Item No: PP-01-Teflon
    Quantity (Pack of 5)Price (US$)
    1 - 45.20
    5 - 94.50
    10 - 994.20
    100 or more4.00
    PP-01-Teflon(#551) last update on 09/Jan/2015, at 10:32 am

    PP-01G
    1 Tap Gold plated brass mounting board
  • 1mm Fiber glass board
  • Gold plated non magnetic brass connecting pin
  • Weight :2 (gram/each)
  • Item No: PP-01G
    Quantity (each)Price (US$)
    1 - 41.80
    5 - 91.50
    10 - 991.20
    100 or more1.00
    PP-01G(#837) last update on 09/Jan/2015, at 10:32 am

    PP-03G
    3 taps Gold plated brass mounting board
  • 1mm Fiber glass board
  • Gold plated non magnetic brass connecting pin
  • Weight :4 (gram/each)
  • Item No: PP-03G
    Quantity (each)Price (US$)
    1 - 42.80
    5 - 92.50
    10 - 992.30
    100 or more2.00
    PP-03G(#805) last update on 28/Apr/2015, at 1:08 pm

    PP-04G
    4 taps Gold plated brass mounting board
  • 1mm Fiber glass board
  • Gold plated non magnetic brass connecting pin
  • Weight :4 (gram/each)
  • Item No: PP-04G
    Quantity (each)Price (US$)
    1 - 43.00
    5 - 92.60
    10 - 992.30
    100 or more2.10
    PP-04G(#838) last update on 09/Jan/2015, at 10:33 am

    PP-05G
    5 taps Gold plated brass mounting board
  • 1mm Fiber glass board
  • Gold plated non magnetic brass connecting pin
  • Weight :8 (gram/each)
  • Item No: PP-05G
    Quantity (each)Price (US$)
    1 - 43.20
    5 - 93.00
    10 - 992.80
    100 or more2.50
    PP-05G(#806) last update on 28/Apr/2015, at 1:09 pm

    PP-07G
    7 taps Gold plated brass mounting board
  • 1mm Fiber glass board
  • Gold plated non magnetic brass connecting pin
  • Weight :8 (gram/each)
  • Item No: PP-07G
    Quantity (each)Price (US$)
    1 - 43.50
    5 - 93.20
    10 - 993.00
    100 or more2.90
    PP-07G(#839) last update on 28/Apr/2015, at 1:09 pm

    PP-10G
    10 taps Gold plated brass mounting board
  • 1mm Fiber glass board
  • Gold plated non magnetic brass connecting pin
  • Weight :8 (gram/each)
  • Item No: PP-10G
    Quantity (each)Price (US$)
    1 - 44.50
    5 - 94.10
    10 - 993.80
    100 or more3.30
    PP-10G(#807) last update on 28/Apr/2015, at 1:10 pm

    PT-SS-22
    Top quality Stainless Steel base plate
  • Made of top quality stainless Steel
  • Best partner with the Wooden pin
  • Sound more clean and details
  • Weight :21 (gram/Each)
  • Size (mm): 22 diameter 4 tall
  • Brand : YA Audio
  • Item No: PT-SS-22
    Quantity (Each)Price (US$)
    1 - 95.00
    10 - 494.30
    50 - 9994.00
    1000 or more3.80
    PT-SS-22(#550) last update on 09/Jan/2015, at 10:35 am

    PT-SS-40
    Top quality Stainless Steel base plate
  • Made of stainless Steel
  • Best partner with the Wooden pin
  • Sound more clean and details
  • Weight :51 (gram/Each)
  • Size (mm): 40 diameter 5 tall
  • Brand : YA Audio
  • Item No: PT-SS-40
    Quantity (Each)Price (US$)
    1 - 99.00
    10 - 497.00
    50 or more6.00
    PT-SS-40(#503) last update on 09/Jan/2015, at 10:35 am

    Items
    Out-of-Stock

    PSC-V807R-15
    SPC-858M-CU
    R0026-009
    SW-3 (ITT-NOS)
    SPC-01PW
    SPC-55PW
    TS-CM04-08VB
    PC-IEC-TB
    PC-IEC-TG
    RCA-GY-FG
    TS-CM09CGS
    Dark Phoenix
    T-500-EU
    Separation and Voltage matching transformer.
    Silver Master 2
    NYM 06-BGS
    RCA-GY-FRH
    LM-2017U
    VR-S32G
    PSC-V701R-15
    KB-BE-42
    LM-5H-2C
    Mallory TC493
    LM-2013U
    Silver Arm wire
    LM-2014U
    SPC-GY-BSP16
    Silver Arm wire 225
    SPC-YA-ZG
    SPC-08C
    LM-9906c
    LM-9903U
    PC-CP-8
    211B Shuguang
    KB-BE-32
    DX-35A
    PB-203AL-S
    PB-202AL-S
    Hellfire-300B kit EU
    Hellfire-300B kit US
    Dream level 2 stages 300B Triode Single Ended amplifier kit.
    Hellfire-300B reduced kit EU
    Dream level 2 stages 300B Triode Single Ended amplifier kit.
    Hirefire-300B reduced kit US
    Dream level 2 stages 300B Triode Single Ended amplifier kit.
    YA-717PW-OCC
    RCA-ACE-wood

    Items
    On Sale

    RCA-CP-Ceramic
    LM-2012U
    LM-9911U-B
    LM-2014U
    NEO-18
    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!