Riverstone Audio – Matched Pair 2 Tubes GE JAN 5654W Fully-Tested Vacuum Tubes 5654 / 6AK5 / 6J1 / 6J1P / EF95 Audio Amplifier Electron Tube Upgrade

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GE-NOS 2PC-GE5654W #ad - All tubes must also pass a specialized life test and an audio sound test. We do not sell untested tubes - never have and never will. 5654w tubes were originally designed as a premium-grade substitute for 6AK5 and EF95 vacuum tubes. Our engineers match tubes for BOTH plate current and mutual conductance, with test results clearly listed on each tube box.

We meticulously inspect, test and match these vacuum tubes using an Amplitrex AT1000 digital tester. Tested in fixed-bias mode at a plate and screen voltage of 120 V and a grid voltage of -2. 0 v. Less than 50% of the nos 5654 tubes we test meet our standards for high fidelity audio use and are considered for use in our matched tube sets.

Riverstone Audio - Matched Pair 2 Tubes GE JAN 5654W Fully-Tested Vacuum Tubes 5654 / 6AK5 / 6J1 / 6J1P / EF95 Audio Amplifier Electron Tube Upgrade #ad - Vacuum tubes sold by riverstone audio will have the "Riverstone Audio" name, logo and QC label on the boxes. The 5654w tubes selected for these matched pairs test at NOS levels at or above 5000 micro-mho and at a plate current of 7. 2 ma or higher. Only the best tubes are considered for our matched tube sets.

With our high standards, less than 50% of the NOS 5654W tubes we test are considered for use in these special matched sets. The proper selection of 5654 tubes requires both expertise and patience. 5654w tubes are Mil.

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Nobsound HiFi 6J1 Vacuum Tube Preamplifier Stereo PreAmp Digital Treble&Bass Tone Control Black

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Nobsound 6245435007543 #ad - Gold-plated for input and output terminals; 6J1 valve tube; Silver version ASIN: B01NBM5CTN. It needs to be connected to the amplifier or active audio devices. With treble and bass adjustment function; No background noise. The output end can connect to the digital amplifiers, active multimedia audio devices.

This is the preamp, not power amplifier. Specifications: audio input: rca input * 1 group audio output: rca output * 1 group power DC input: 12V input Aluminum shell, CNC processing Laser carving characters Color: Black / Silver Size: W100×H70×D150 mm Weight: 05kg package include: 1× digital audio preamp 1× 12V Power Supply Audio signal input end can connect to the computer, CD, phone and other player for lossless audio.

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Little Bear Vacumn Tube Mini Phono Stage RIAA MM Phonograph Preamp & HiFi Tube Pre-Amplifier Silver

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Little Bear 6245435006232 #ad - Notice: as a phono preamp, it is suited for MM turntables only. As an aux preamp, dac, it is suited for devices like CD, PC, cellphone. For balck version, please search ASIN: B071NPGWJC. Do not support MC turntables. Parameters: riaa phono part: rIAA freq response 20hz-20kHz +/- 05db, s / n ratio> 85dB THD.

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Little bear P5-1 BLUE tube valve puffer Preamp Preamplifier amplifier ver1.2

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Little Bear Audio P5-blue #ad - It needs to be connected to the amplifier or active audio devices. With treble and bass adjustment function; No background noise. It's a very cool preamp. It's newest version. This product can provide high fidelity and warm sound beyond your expectation. 3, best for your desk headphone amplifier or home power amplifier.

Make the sound more warm. Just for refer. Assembled finish PCB. 1, minimize noise, warm sound, PCB Circuit layout is reasonable and beautiful, perfact for listen person singing. When you get it. You need assemble it by yourself, easy work. Its tube6j1 can be directly replaced with tubes like 5654, 6AK5, EF95. Etc.

Little bear P5-1 BLUE tube valve puffer Preamp Preamplifier amplifier ver1.2 #ad - Else. Becaue is tube preamp. Usually the amplifier need warm time about 5-10 minutes, after can work in perfact status. 2, about the input and output interface. All using goLD RCA interface. Gold-plated for input and output terminals; 6J1 valve tube; Silver version ASIN: B01NBM5CTN.

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Douk Audio Mini 6J1 Valve & Vacuum Tube Pre-Amplifier Stereo HiFi Buffer Preamp

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Douk Audio TUBE-01-BLACK #ad - The output end can connect to the digital amplifiers, active multimedia audio devices. This is the preamp, not power amplifier. It needs to be connected to the amplifier or active audio devices. With treble and bass adjustment function; No background noise. Usually 7-10 business days arrival. Gold-plated for input and output terminals; 6J1 valve tube; Silver version ASIN: B01NBM5CTN.

Notice: this is pre-amplifier. Thd: 1000mv 01%. This product can be used as a MM Turntable Preamp or a HiFi Tube Pre-Amplifier. Input sensitivity: 300mv-2000mv. Frequency response: 20HZ -02db -20khz -02db. Snr: 100db. Its tube6j1 can be directly replaced with tubes like 5654, 6AK5, EF95. Etc. Its mini size makes it more portable and be suited for a variety of scenarios and Its alluminum body makes it strong and elegant.

Douk Audio Mini 6J1 Valve & Vacuum Tube Pre-Amplifier Stereo HiFi Buffer Preamp #ad - Now according to our customer's needs, a Gain control switch has been added on the PCB.

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Nobsound HiFi 6J1 Vacuum Tube Preamplifier Stereo PreAmp Digital Treble&Bass Tone Control Silver

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Nobsound #ad - Weight: 350g. The output end can connect to the digital amplifiers, active multimedia audio devices. This is the preamp, not power amplifier. It needs to be connected to the amplifier or active audio devices. With treble and bass adjustment function; No background noise. The output end can connect to the digital amplifiers, active multimedia audio devices.

This is the preamp, not power amplifier. Frequency response: 20HZ -02db -20khz -02db. This product can provide high fidelity and warm sound beyond your expectation. Package including 1 x tuBE-01 1 x DC12V1A. It needs to be connected to the amplifier or active audio devices. With treble and bass adjustment function; No background noise.

Nobsound HiFi 6J1 Vacuum Tube Preamplifier Stereo PreAmp Digital Treble&Bass Tone Control Silver #ad - Its mini size makes it more portable and be suited for a variety of scenarios and Its alluminum body makes it strong and elegant. Now according to our customer's needs, a Gain control switch has been added on the PCB. 1 x solder finished preamp board 2 x peking 6j1 tube 6 x panelassemble to a box, i will sent correct model to you by your addresscountry, output AC:12V/1A, 4x screws 1 x Transformer 110V or 220V, with EU/UK/US/AU plug for choice.

Pcb circuit layout is reasonable and beautiful, minimize noise, warm sound, perfact for listen person singing. Best for your desk headphone amplifier or home power amplifier.

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Douk Audio Mini 6J1 Valve & Vacuum Tube Pre-Amplifier Stereo HiFi Buffer PreampSilver)

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Douk Audio TUBE-01-SILVER #ad - Input sensitivity: 300mv-2000mv. This product can provide high fidelity and warm sound beyond your expectation. Need to connect with power amplifier for use. Since it is not Phono preamp, it is not suitable for turntable. Size: 98x100x32mm. Gold-plated for input and output terminals; 6J1 valve tube; Black version ASIN: B01NBM7K8L.

It needs to be connected to the amplifier or active audio devices. With treble and bass adjustment function; No background noise. Snr: 100db. Output power: 3000mv. Its tube6j1 can be directly replaced with tubes like 5654, 6AK5, EF95. Etc. It needs to be connected to the amplifier or active audio devices. With treble and bass adjustment function; No background noise.

Douk Audio Mini 6J1 Valve & Vacuum Tube Pre-Amplifier Stereo HiFi Buffer PreampSilver) #ad - . Audio signal input end can connect to the computer, CD, phone and other player for lossless audio. Its mini size makes it more portable and be suited for a variety of scenarios and Its alluminum body makes it strong and elegant. Now according to our customer's needs, a Gain control switch has been added on the PCB.

1 x solder finished preamp board 2 x peking 6j1 tube 6 x panelassemble to a box, i will sent correct model to you by your addresscountry, output AC:12V/1A, 4x screws 1 x Transformer 110V or 220V, with EU/UK/US/AU plug for choice.

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Little Dot MK2 MKII 6J1 X2 6N6 X2 Headphone Amp Amplifier Pre-Amp Tube

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LittleDot Little Dot MKII #ad - Notice: this is pre-Amplifier. Audio signal input end can connect to the computer, CD, phone and other player for lossless audio. The output end can connect to the digital amplifiers, active multimedia audio devices. This is the preamp, not power amplifier. It needs to be connected to the amplifier or active audio devices.

With treble and bass adjustment function; No background noise. Notice: this is pre-amplifier. Output power: 3000mv. Little dot mkii greatly increases sound quality, dynamic range, output impedance, and harmonic distortion. Little dot mkii also gains the driver tube-rolling options from the rest of the mk-series with the ability to roll 6JI, EF95, WE403A/B, and with jumper pins shorted, CV131, EF92, GE5654, M8100, etc at its factory jumper setting, CV4010, and all equivalents and drop-in replacements.

Little Dot MK2 MKII 6J1 X2 6N6 X2 Headphone Amp Amplifier Pre-Amp Tube #ad - Weight: 350g. This product can provide high fidelity and warm sound beyond your expectation. Its tube6j1 can be directly replaced with tubes like 5654, 6AK5, EF95. Etc. This product can be used as a MM Turntable Preamp or a HiFi Tube Pre-Amplifier. Thd: 1000mv 01%.

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Nobsound NS-08E Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp

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Nobsound 769700919653 #ad - We recommend using 24~600Ω headphones, while armature earphones and headphones that have low resistance and high sensitivity are not suitable. If there are no interference, please remove all input and listen to see if the noise still exists. Notice: please turn on the amplifier for about 15 seconds before you connect the audio source and put on the headset.

Specifications: output power: ≥1100 mw 32 ohm Headphone Adapter Impedance: 18-600 ohm Total harmonic distortion:. As there will be vavle Microphone effect, please keep the amplifier steady while using it. For noise issue, please keep it away from devices like routers, mobile phones or something that may interfere in the audio signal.

Nobsound NS-08E Vacuum Tube Integrated Amplifier Mini Audio HiFi Stereo Headphone Amp #ad - If so, the device may be defective and you can contact us to get support.

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Little bear P5-1 CLEAR 6J1 tube valve puffer Preamp Preamplifier amplifier ver1.2

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Little Bear Audio P5-1-clear #ad - This product can provide high fidelity and warm sound beyond your expectation. Snr: 100db. Sample guide: cd/mp3 player->6j1 preamp->power amplifier->speaker input volage:ac12v/1a interface:gold rca*2input and output volume knob with volume and turn on/off function weight:350g input/output impedance:100K Package included: 1 x Solder finished preamp board 2 x Peking 6J1 tube 6 x Panelassemble to a box, i will sent correct model to you by your addresscountry, 4x screws 1 x Transformer 110V or 220V, CD, with EU/UK/US/AU plug for choice Audio signal input end can connect to the computer, output AC:12V/1A, phone and other player for lossless audio.

This product can be used as a MM Turntable Preamp or a HiFi Tube Pre-Amplifier. When you get it. You need assemble it by yourself, easy work. Weight: 350g. It's a very cool preamp. It's newest version. Output power: 3000mv. Output power: 3000mv. Package including 1 x tuBE-01 1 x DC12V1A. For our latest tube headphone amplifier, please search B01I19SBAW on Amazon.

Little bear P5-1 CLEAR 6J1 tube valve puffer Preamp Preamplifier amplifier ver1.2 #ad - Its tube6j1 can be directly replaced with tubes like 5654, 6AK5, EF95.

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Nobsound Little Bear T7 Vacumn Tube Mini Phono Stage RIAA MM Turntable Preamp & HiFi Tube Pre-Amplifier Black

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Nobsound 7928096579930 #ad - For silver version, please search ASIN: B01M7UGWU9. Parameters: riaa phono part: rIAA freq response 20hz-20kHz +/- 05db, s / n ratio> 85dB THD. Notice: as a phono preamp, it is suited for MM turntables only. As an aux preamp, pc, dac, it is suited for devices like CD, cellphone. Do not support MC turntables.

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