1-20 of 1,952 results
  • -21% Upgraded 6K4 Tube Preamplifier Amplifier Adjustable HiFi Tube Preamp Audio Speaker Sounds Amp Board Home Theater DIY DC12-16V
    Upgraded 6K4 Tube Preamplifier...
    Features: * Brand new high quality * Made of high quality materials * Experien... Features: * Brand new high quality * Made of high quality materials * Experience enhanced restore real sounds * Product performance is stable can be upgraded for various types of bile ducts * Preamplifier frequency response 5HZ-500KHZ as long as... more
    Details
    $20.18 $15.94 Delivery: $4.99 Go to store
  • Upgraded 6K4 Tube Preamplifier Amplifier Adjustable HiFi Tube Preamp Audio Speaker Sounds Amp Board Home Theater DIY DC12-16V
    Upgraded 6K4 Tube Preamplifier...
    Features: * Brand new top quality * Made of top quality materials * Experience... Features: * Brand new top quality * Made of top quality materials * Experience enhanced restore real sounds * Product performance is stable can be upgraded for various types of bile ducts * Preamplifier frequency response 5HZ-500KHZ as long as your... more
    Details
    $20.61 Free Delivery Go to store
  • CAIJIEXI DC12-16V Upgraded 6K4 Tube Preamplifier Amplifier HiFi Tube Preamp Audio Sounds Amp Board 5HZ-500KHZ
    CAIJIEXI DC12-16V Upgraded 6K4...
    Features: * Brand new high quality * Made of high quality materials * Experien... Features: * Brand new high quality * Made of high quality materials * Experience enhanced restore real sounds * Product performance is stable can be upgraded for various types of bile ducts * Preamplifier frequency response 5HZ-500KHZ as long as... more
    Details
    $35.58 Delivery: $5.27 Go to store
  • -28% Upgraded 6K4 Tube Preamplifier Amplifier HiFi Tube Preamp Audio Sounds Amp Board
    Upgraded 6K4 Tube Preamplifier...
    Features: * Brand new and high quality * Made of high quality materials durabl... Features: * Brand new and high quality * Made of high quality materials durable * Experience enhanced audio fidelity and restore real sounds * Product performance is stable and can be upgraded for various types of bile ducts * Preamplifier frequency... more
    Details
    $25.76 $18.66 Delivery: $7.00 Go to store
  • Upgraded 6K4 Tube Preamplifier HiFi Tube Preamp Audio Amp Home Theater DIY TAPDRA Spare Part
    Upgraded 6K4 Tube Preamplifier...
    Features: 1. High-quality materials experience enhanced audio fidelity restore... Features: 1. High-quality materials experience enhanced audio fidelity restore true sound 2. Stable product performance upgraded for a variety of models of bile ducts 3. Preamplifier frequency response 5HZ-500KHZ as long as your ears can hear the... more
    Details
    $33.50 Free Delivery Go to store
  • Electronic Tube 6ak5/6ak5w/6zh1p/6j1/6j1p/ef95 Tube Amplifier Tube Amplifier Diy 6k4 Tube Valve Tube Valve Tube Amplifier Diy Preamp Diy Preamp Tube 2pcs 6k4 Tube 2pcs Tube 2pcs
    Electronic Tube 6ak5/6ak5w/6zh...
    2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J... 2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube Amplifier DIY Preamp Vacuum Tube High reliability and stability. HiFi and soft sound low noise. Replacement for 7-pin... more
    Details
    $15.88 Free Delivery Go to store
  • Upgraded 6K4 Tube Preamplifier HiFi Tube Preamp Audio Sounds Amp Board likeweier
    Upgraded 6K4 Tube Preamplifier...
    Features: * Brand new high quality * Made of high quality materials * Experien... Features: * Brand new high quality * Made of high quality materials * Experience enhanced audio fidelity restore real sounds * Product performance is stable can be upgraded for various types of bile ducts * Preamplifier frequency response 5HZ-500KHZ... more
    Details
    $17.03 Delivery: $4.99 Go to store
  • -37% Upgraded 6K4 Tube Preamplifier Hifi Tube Preamp Audio Sounds Amp Board
    Upgraded 6K4 Tube Preamplifier...
    Upgraded 6K4 Tube Preamplifier Hifi Tube Preamp Audio Sounds Amp Board Feature... Upgraded 6K4 Tube Preamplifier Hifi Tube Preamp Audio Sounds Amp Board Features: * Brand new high quality * Made of high quality materials * Experience enhanced restore real sounds * Product performance is stable can be upgraded for various types of... more
    Details
    $17.88 $11.24 Delivery: $9.99 Go to store
  • Dreamhall Dc12-16V Upgraded Preamplifier Amplifiers Hifi Tube Preamp Amp Speaker Sound Home Theater for J1 6J2 6J3 6J4 6J5 6A2 6K4 6K5
    Dreamhall Dc12-16V Upgraded Pr...
    Specification: This product is a tube for pre and needs to be connected to an ... Specification: This product is a tube for pre and needs to be connected to an active speaker or power . It cannot be directly connected to car speakers and passive speakers headphones and phono s. Product name: Tube for pre Tube: 6A2 (tube... more
    Details
    $31.72 Free Delivery Go to store
  • DC12-16V Upgraded Preamplifier Amplifiers HiFi Tube Preamp Amp Speaker Sound Home Theater For J1 6J2 6J3 6J4 6J5 6A2 6K4 6K5
    DC12-16V Upgraded Preamplifier...
    Specification: This product is a tube for pre and needs to be connected to an ... Specification: This product is a tube for pre and needs to be connected to an active speaker or power . It cannot be directly connected to car speakers and passive speakers headphones and phono s. Product name: Tube for pre Tube: 6A2 (tube... more
    Details
    $25.09 Free Delivery Go to store
  • -8% DC12-16V Upgraded Preamplifier Amplifiers HiFi Tube Preamp Amp Speaker Sound Home Theater for J1 6J2 6J3 6J4 6J5 6A2 6K4 6K5
    DC12-16V Upgraded Preamplifier...
    Specification: This product is a tube pre and needs to be connected to an acti... Specification: This product is a tube pre and needs to be connected to an active speaker or power . It cannot be directly connected to car speakers and passive speakers headphones and phono s. Product name: Tube pre Tube: 6A2 (tube disassembled)... more
    Details
    $23.10 $21.33 Delivery: $7.99 Go to store
  • -17% Huajunming Upgraded 6K4 Tube Preamplifier Hifi Tube Preamp Audio Sounds Amp Board
    Huajunming Upgraded 6K4 Tube P...
    Features: * Brand new high quality * Made of high quality materials * Experien... Features: * Brand new high quality * Made of high quality materials * Experience enhanced restore real sounds * Product performance is stable can be upgraded for various types of bile ducts * Preamplifier frequency response 5HZ-500KHZ as long as... more
    Details
    $21.11 $17.56 Delivery: $8.49 Go to store
  • Audio A3 PRO 6K4 Tube Preamplifier Amplifier Preamp HiFi Tube Preamp Bile Buffer Amp Speaker Sound Amplifiers Home Audio Amplifier
    Audio A3 PRO 6K4 Tube Preampli...
    Product parameters: Product name: A3 PRO Tube model: 6K4 The tube that can be ... Product parameters: Product name: A3 PRO Tube model: 6K4 The tube that can be replaced are: 6J1 6J2 GE5654 6J3 6J4 6J5 6J1 6AK5 etc. OP AMP chip: NE5532P*2 Replaceable OP amp chips: OPA2604 OPA2134 LM4562 JRC5532 etc. chip: domestic JL... more
    Details
    $77.36 Free Delivery Go to store
  • -11% HIPKZ 6K4 Tube Preamplifier Amplifier Dc12v 16V Preamp Tube Board Adjustable Preamp Tube Board Diy Kit Multiple Input Options for Home Audio Amplifier System
    HIPKZ 6K4 Tube Preamplifier Am...
    Specification: Certification: NONE Compatible Audio & Video Equipment Style: A... Specification: Certification: NONE Compatible Audio & Video Equipment Style: Amplifier Model Number: 6K4 Tube Preamplifier Weight: 180.00 g Package: Yes Power supply: DC12-16V current 1A or above (DC12V 1.5A power supply is recommended) (no supply)... more
    Details
    $22.99 $20.46 Free Delivery Go to store
  • Audio A3 PRO 6K4 Tube Preamplifier Amplifier Preamp HiFi Tube Preamp Bile Buffer Amp Speaker Sound Amplifiers High Sound
    Audio A3 PRO 6K4 Tube Preampli...
    Product parameters: Product name: A3 PRO Tube model: 6K4 The tube that can be ... Product parameters: Product name: A3 PRO Tube model: 6K4 The tube that can be replaced are: 6J1 6J2 GE5654 6J3 6J4 6J5 6J1 6AK5 etc. OP AMP chip: NE5532P*2 Replaceable OP amp chips: OPA2604 OPA2134 LM4562 JRC5532 etc. chip: domestic JL... more
    Details
    $77.36 Free Delivery Go to store
  • -12% Audio 6K4 Tube Amplifier Bile Preamplifier Stereo HIFI Preamp Aptx For Power Amplifiers Active Speakers Home Audio Amplifier
    Audio 6K4 Tube Amplifier Bile ...
    Feature: Chipset: 6K4+QCC3034+NE5532 QCC3034 : Version 5.0 supports AAC SBC AP... Feature: Chipset: 6K4+QCC3034+NE5532 QCC3034 : Version 5.0 supports AAC SBC APTX APTX-LL APTX-HD Tube Model: 6K4 Replaceable tubes are: 6J1 6J2 GE5654 6J3 6J4 6J5 6*1N 6AK5 etc. Operational amplifier chip: NE5532*2 Replaceable op amp chips: OPA2604... more
    Details
    $92.66 $81.55 Free Delivery Go to store
  • -7% Electronic Tube Amplifier Diy Preamp Tube Valve Tube 6k4 Tube Valve Diy Preamp Tube 2pcs 6k4 Tube Ment 6ak5/6ak5w/6zh1p/6j1/6j1p/ef95 P 6ak5/6ak5w/6zh1p/6j1/6j1p/ef95 P Tube Koeb Ziem
    Electronic Tube Amplifier Diy ...
    2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J... 2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube Amplifier DIY Preamp Vacuum Tube Replacement for 7-pin 5654/6AK5/6AK5W/6Zh1P/6J1/6J1P tubes. It can directly replace 403A/403B/EF95 and ordinary... more
    Details
    $15.19 $14.18 Free Delivery Go to store
  • Electronic Tube 6k4 Tube Valve Amplifier Diy Preamp Tube 2pcs Tube Amplifier Diy Tube 6ak5/6ak5w/6zh1p/6j1/6j1p/ef95 Tube Preamp Tube 6ak5/6ak5w/6zh1p/6j1/6j1p/ef95 P Tube Eryue Baoe
    Electronic Tube 6k4 Tube Valve...
    2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J... 2PCS 6K4 Electronic Tube Valve Vacuum Tube Replacement for 6AK5/6AK5W/6Zh1P/6J1/6J1P/EF95 Pairing Tube Amplifier DIY Preamp Vacuum Tube Replacement for 7-pin 5654/6AK5/6AK5W/6Zh1P/6J1/6J1P tubes. It can directly replace 403A/403B/EF95 and ordinary... more
    Details
    $15.18 Free Delivery Go to store
  • FX-AUDIO TUBE-03 Mini HiFi Audio Preamplifier 6K4 Vacuum Tube Amplifier Buffer Treble Bass Adjustment RCA Preamp Black US Plug
    FX-AUDIO TUBE-03 Mini HiFi Aud...
    Overview: With a wide applied range and practicability this preamplifier can f... Overview: With a wide applied range and practicability this preamplifier can fit the majority of active speakers and power amplifiers in the market. The replaceable 6K4 vacuum tubes design can optimize the circuit. The audio part and the power part... more
    Details
    $50.83 Delivery: $1.00 Go to store
  • -13% Dc Finished Board 6K4 Tubes with Boost Version Preamp Board Amplifier Hifi Tube Preamplifier Board
    Dc Finished Board 6K4 Tubes wi...
    Power supply:DC12-16V Current: equal 1A Instructions for use: 1. Locator with ... Power supply:DC12-16V Current: equal 1A Instructions for use: 1. Locator with switch: the knob clockwise to tick a light then the volume is the minimum continue to clockwise to increase the volume 2. tube filament:tube to be inserted in boot to see... more
    Details
    $17.80 $15.44 Delivery: $2.00 Go to store
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