Fosi Audio P2 Headphone Amplifier outlet online sale Vacuum Tube Headphone discount Amp Mini Hi-Fi Stereo Audio with Low Ground Noise Output Protection online sale

Fosi Audio P2 Headphone Amplifier outlet online sale Vacuum Tube Headphone discount Amp Mini Hi-Fi Stereo Audio with Low Ground Noise Output Protection online sale

Fosi Audio P2 Headphone Amplifier outlet online sale Vacuum Tube Headphone discount Amp Mini Hi-Fi Stereo Audio with Low Ground Noise Output Protection online sale
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Brand
Fosi Audio
Item Weight
0.25 Kilograms
Material
Aluminum
Special Feature
With Output Protection;, Audiophile-level Sound Quality;


WHY YOU'LL LOVE IT

Fosi Audio Story

Fosi Audio was founded with a simple goal: Build products that sound great and make people want to listen to music every day. We design, manufacture, and sell many Hi-Fi audio products on the market. We pursue your perfect music journey. Enjoy Hi-Fi music with Fosi Audio audio products NOW!

  • Fosi Audio store: www.fosiaudioshop.com
  • Facebook page: Fosi Audio
  • Technical support: www.fosiaudioshop.com

FEATURES

Tube-P2 will bring you different hearing enjoyment. You wouldn't expect headphones to need any special equipment to work. You plug them in, turn your device on, and music comes through. But what if you don't just want to listen to your music? What if you truly want to hear it? You'll need something to increase the level of signal that reaches your ears: a good tube headphone amp.

  • Packing List1
  • headphone amplifier x1
  • 6J4 vacuum tubes x2
  • DC 12V Power Supply x1
  • 6.35mm to 3.5mm Adapter
  • AC 110V - 240V

  • Small Compact Size with low ground noise;
  • Parallel 3.5mm and RCA stereo inputs;
  • Built-in output protect circuit;
  • Audiophile-level sound quality;
  • Headphones Maxpower output: 600 mW / 62Ω, 900 MW / 32Ω, 1 W / 16Ω

SPECS

  • OP-amp: NE5532
  • Audio Input: 3.5mm Audio jack, Stereo L / R RCA
  • Frequency range: 20Hz-20 kHz (± 3dB)
  • THD: ≤0, 03%
  • Matching headphone impedance: 32-600 Ω
  • NR: ≥ 95db
  • Operating voltage: DC12V
  • Input sensitivity: 0.2mV
  • Dimension: L99 * W98 * H33 mm
  • Net weight: 0.25 kg

Tips:

1. When you use this product for a long time, please do not touch it by your bare hand, it may hot, but please don't worry this is a normal phenomenon.)

2. Please plug the power supply after all the connection been done for safety;

3. We recommend using 32~300Ω headphones, while armature earphones and headphones that have low resistance and high sensitivity are not suitable.

4. For noise issue, please keep it away from devices like routers, mobile phones or something that may interfere in the audio signal.

5. Please make sure the tubes completely pushed into the device, incompletely connection will cause noise or poping sound.

P2 P1 PH04 T20 With 5654W BOX X2 With 5654W N2
Type Headphone Amp +Preamp Preamp 4 Channel Headphone Amplifier Power Amplifier + Preamp Phono Preamp Headphone Amp
With Volume Control YES YES YES YES YES YES
Output Type 3.5 mm + 6.35 mm RCA 1/8’’ Headphone Jack 3.5 mm + Speakers Powered Speakers 3.5MM AUX
Bass and Treble Control NO YES NO YES NO Bass & Gain Control
Input ways AUX + RCA RCA 1/8’’ Headphone Jack Bluetooth + RCA RCA+3.5mm AUX 3.5MM AUX
DC Input 12 V 12 V 12 V 24 V 12 V Battery capacity: 2200mA
Additional Features Tube Headphone Amp/ Preamp Tube Preamp Headphone Amp Tube Preamp/ Power Amp Phono Preamp Headphone Amp
Product Adapter AC 110V - 240V AC 110V - 240V - AC 110V - 240V AC 110V - 240V -

Features & details

Features

  • ❤Excellent sound performance: Low ground noise, built-in output protect circuit, no buzzing or ringing noise, Audiophile-level sound quality, exclusively designed for the customers who pursue HiFi sound; and safe for your expensive headphones.
  • ❤Stereo and Preamplify: Headphones amp also can be used as stereo preamp, Parallel 3.5mm and RCA stereo inputs, 6.35mm headphone output, include a 6.35mm to 3.5mm adapter.
  • ❤High-performance: P2 is a Hi-Fi tube headphone amp, 2 X 6K4 J-Grade tubes can easily power high-performance headphones including the HD580, HD600, HD650, K701, K702, Q701, and many more, recommend 32-600ohm headphones.
  • ❤Easy replace tube: Tubes can be replaced by 6j1/6J4/GE5654/6AK5/6*1n/ E180F/6ж9П/EF861/6688 tubes etc.
  • ❤Exquisite appearance: Small Compact Size, All aluminum alloy shell and come with a 18-month manufacturer''s warranty.

Product information

Product Warranty: For warranty information about this product, please click here
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Product guides and documents

Comparison Chart (PDF)
User Guide (PDF)
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Related posts

Customer Questions

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Q: has anyone tried this amplifier with 600 ohms headphones?

A: Yes, works well with my 600ohm headphones.

Ryan | 2 years ago

Q: What kinda if tubes can i replace the stock ones with once they burn out?

A: Hello, you can buy these tubes.
https://www.amazon.com/dp/B087LXW6RL

Seller Fosi Audio | 1 year ago

Q: This will work so i can listen to my record player with my headphones?

A: Hello, if your record player has a built-in preamp circuit, you can use this tube amp to l…

Seller Fosi Audio | 2 years ago

Q: Can the fosi t2 headphone amp work with the fosi Q5 dac

A: Assuming you mean the p2 headphone amp, yes, it will. You''ll need an RCA cable to connect …

matros | 2 years ago

Customer reviews

4.3 out of 54.3 out of 5
122 global ratings

Top reviews from the United States

Elio
4.0 out of 5 starsVerified Purchase
Great sound, questionable build. You get what you pay for.
Reviewed in the United States on September 1, 2019
Let me start out by saying that if you''re looking for a cheap amp to drive your headphones, this is a solid choice. Paired with my Sennheiser HD 58X Jubillees I get a killer bedroom setup for a little over 200$. The other reason that I got this amp was so I could hook up my... See more
Let me start out by saying that if you''re looking for a cheap amp to drive your headphones, this is a solid choice. Paired with my Sennheiser HD 58X Jubillees I get a killer bedroom setup for a little over 200$. The other reason that I got this amp was so I could hook up my AT-LP60 to it, and listen to records with headphones on. That works worse for a reason that I will now get into: the ports. This amp was built with very cheap ports to cut cost. The 3.5 mm port on the back often causes an electrical buzz to come out of whatever is plugged into the amp, which can be fixed by rotating the cable in the port and messing with the direction and point of pressure. It''s no big deal, but it''s still a clear sign of the quality of some of the components that are in this device. Still, Having to mess with it to get it just right for about a minute around once a week really isn''t such a huge deal. The RCA inputs however are much worse. They just flat out sound bad, to the point where every time that I decide to give them another shot I am reminded of how horrible the RCA ins sound. The tubes, on/off switch, audio out, and volume knob all work great though.

TL;DR: This amp has a great sound for 50$. However, what you''re sacrificing at this price is build quality and component quality.
12 people found this helpful
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Mike O
3.0 out of 5 starsVerified PurchaseEarly Reviewer Rewards
Entry level tube headphone amp
Reviewed in the United States on September 8, 2019
Value for money, this is really hard to beat, especially in the world of tube amps. This one is a "hybrid" in that it uses tubes for the pre-amp stage and chips (OpAmps) for the gain stage. As you can see from the photos, you can roll rubes AND opamps. There is 1 chip per... See more
Value for money, this is really hard to beat, especially in the world of tube amps. This one is a "hybrid" in that it uses tubes for the pre-amp stage and chips (OpAmps) for the gain stage. As you can see from the photos, you can roll rubes AND opamps. There is 1 chip per channel, so you need to buy them in pairs.

I tried this with a couple different tubes -- the stock ones, as well as some sought after Mullards, as well as with a couple different opamp pairs. The differences were minimal.

On the sound quality front, I found this to be extremely quiet, though a bit "lean" or "thin" when compared to my Little Dot 1+ (which is almost double the price). It also doesn''t get super loud. If you have demanding headphones or like to listen at high volumes, you might want to look elsewhere. I suspect this might be due to the wall wart power supply.

Build quality wise, it seems well put together. The volume knob is "stepped", so you will hear small gains with each step or "notch" in the dial, rather than a smooth increase (as you will experience with something more premium).

Overall, it''s a solid value for money and nice entry level headphone amp.
9 people found this helpful
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Kenny S
5.0 out of 5 starsVerified Purchase
Took a Risk!
Reviewed in the United States on July 22, 2019
I was looking at for a budget headphone tube/hybrid amp when i bought this out of shear risk since there are zero reviews of this thing anywhere but the one on amazon. I''ll put it this way this thing sounds wonderful, pushes my Sennheiser HD600s wonderfully with more head... See more
I was looking at for a budget headphone tube/hybrid amp when i bought this out of shear risk since there are zero reviews of this thing anywhere but the one on amazon. I''ll put it this way this thing sounds wonderful, pushes my Sennheiser HD600s wonderfully with more head room with out and distortion and when not playing any audio there is not hiss or static. Another pro is that it doesn''t have any bright blue leds like a lot of other budget tube amps. I am looking forward to swapping out tubes and seeing what this little amp is capable of.
11 people found this helpful
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SomeUserName
5.0 out of 5 starsVerified Purchase
Solid Little Headphone Amp for the Price
Reviewed in the United States on July 12, 2019
This is a nice tube headphone amp especially considering the price. It drives my Beyerdynamic DT880''s 2003, 300 Ohms easily. The stepped volume control might not be for everyone, but it works well. The amp has a completely black background on my unit when nothing connected... See more
This is a nice tube headphone amp especially considering the price. It drives my Beyerdynamic DT880''s 2003, 300 Ohms easily. The stepped volume control might not be for everyone, but it works well. The amp has a completely black background on my unit when nothing connected and volume turned up high. I can''t detect any major coloration of the sound when compared to my Hiby R6.
8 people found this helpful
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Some Dude
4.0 out of 5 starsVerified Purchase
Setup woes and (in the end) a victory!
Reviewed in the United States on November 11, 2019
When initially setting up the P2, it failed to function with all three of my headphones. Could hear what was being fed to the P2, but it was very quiet (even at max volume) and extremely distant and echo-laden — similar to hearing voices in a long tunnel. Did some... See more
When initially setting up the P2, it failed to function with all three of my headphones. Could hear what was being fed to the P2, but it was very quiet (even at max volume) and extremely distant and echo-laden — similar to hearing voices in a long tunnel. Did some troubleshooting and narrowed it down to an apparent fault with the supplied 1/4”-to-1/8” adaptor. Swapped out the supplied adaptor with a known good one, but no change. Dove deeper and realized that the 1/8” plug on all three of my headphones is TRRS and the headphone jack on the P2 is TRS. It would be REALLY helpful if the Amazon description of the P2 pointed out this potential conflict and the manufacturer supplied a TRS-to-TRRS adaptor with the P2, especially since TRRS headphones are so common these days. After all of this, and with an $8 TRS-to-TRRS adaptor in hand, am really enjoying the P2. This $50 hybrid tube headphone amp (the first one that I’ve heard) is a noteworthy improvement over my $50 solid state headphone amp. That SS headphone amp was harsh, cold, and sibilant. The P2, in contrast, is clean with a touch of warmth and no sibilance. However, and just occasionally, there is some distinct static during quiet times, such as between songs. For $50 plus the TRS-to-TRRS adaptor, am not complaining, but this amp is a tad shy of being perfect.

Update on 14 Jan 2020: After living with the above-mentioned intermittent static for the past two months of occasional use, decided to return the headphone amp. Cannot believe that the static will go away over time. In the end, we buy amplifiers to listen to music, not static. My other headphone amplifier creates ZERO static. The P2 should have been designed and/or manufactured better as to introduce no static. Am really going to miss those beautiful glowing tubes...
5 people found this helpful
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liam
5.0 out of 5 starsVerified Purchase
Will not work For a turntable
Reviewed in the United States on August 3, 2019
The sound quality on this is great very low noise floor i mean dead quiet. The problem I have with it is it will not work with a turntable. Just does not quite have the oomph despite what the description says and shows in its diagram. If you read the manual it states it can... See more
The sound quality on this is great very low noise floor i mean dead quiet. The problem I have with it is it will not work with a turntable. Just does not quite have the oomph despite what the description says and shows in its diagram. If you read the manual it states it can not work with a turntable and for that I will be returning it.

I did use it with line level out devices and it works and sounds wonderful and I am sure will sound even better after the tubes break in, So if you want to experience tube sound with line level devices this thing would be great. Although I don''t know many people who do. Most of the time you are boosting an analog signal from an analog device. Does not make much since to tube amplify your streaming music.
4 people found this helpful
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M. Henderson
5.0 out of 5 starsVerified Purchase
Great Budget Tube Amp
Reviewed in the United States on June 22, 2021
I got this tube headphone amp to go with my Sennheiser HD6XX headphones from Massdrop, which is their custom tuned version of the HD650 for half the price. For those wondering what the difference is, they just reduce the midrange and treble a little to be more balanced with... See more
I got this tube headphone amp to go with my Sennheiser HD6XX headphones from Massdrop, which is their custom tuned version of the HD650 for half the price. For those wondering what the difference is, they just reduce the midrange and treble a little to be more balanced with bass giving it a warmer sound. According to many Audiophiles, tube amps go well with the HD600 series like peanut butter and jelly. So I said, why not get a budget one instead of the crazy expensive versions and test this belief for myself. I''m glad I did. For starters the HD6XX like many in the 600 series is very detailed in its sound. That''s what makes the them so popular.

Without the tube amp, the HD6XX is one of the best headphones you''ll ever buy. With a good enough tube amp all the benefits of the headphone is literally amplified. Of course, there is the point of needing an amp for the 600 series to begin with, because of the headphones having 300 impedance, so you''ll barely hear anything meaningful at stock volumes from a cellphone, television, computer, etc. You''ll literally need to max those volumes out using this type of headphone, and it still wouldn''t be loud enough for most people. But the tube amp also amplifies the sound quality making the music sound very clean and clear. That is the best way to describe the sound. There is no distortion, the instruments sound even more detailed. The bass is very clean, and the vocals are so well balanced you''d think the singer is performing right in front of you. The soundstage is greatly improved, giving the music a live performance effect, especially if its coming off of a high quality, lossless, music source. And because of the HD6XX more warm based sound profile, it improves gaming and watching movies too, especially in the vocals for movies and shows, and the sound effects for video games.

The amp itself doesn''t get very hot, even after many hours of use, and it doesn''t have the static noise problem that many tube amps, even ones far more expensive have. The tubes themselves are also very easy to remove and replace. So if one of them burns out, or you just want to try a different version for a different sound, you easily can. The only downside is the tube amp comes with a short AC power cord. You either have to use the amp close to a wall outlet or get an extension cord. This, however, is a minor setback compared to all the benefits.

I highly recommend this tube amp, if you want improved sound without spending a fortune. Of course, a more expensive well known brand would probably make these your headphones sound even better, but if you''re thinking about getting this, then you likely have the same mindset as myself. Well, go on ahead and add it to your cart. Its a good value.
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Johnny B
5.0 out of 5 starsVerified Purchase
Awesome! More than enough power for 300ohm headphones or active bookshelf speakers. Sound A++
Reviewed in the United States on September 5, 2019
Nice reintroduction to the warm sound of a tube amp using rca connection and Sony 7506’s, Update: 10/5/2019: All other systems I''ve listened to since, some 5 figure audiophile dream systems, don''t come close to my Fosi headphone mini amp, Fosi DAC with Sony 7506''s or... See more
Nice reintroduction to the warm sound of a tube amp using rca connection and Sony 7506’s, Update: 10/5/2019: All other systems I''ve listened to since, some 5 figure audiophile dream systems, don''t come close to my Fosi headphone mini amp, Fosi DAC with Sony 7506''s or Edifier active speakers. Very happy with purchase!. For the money you''d be hard pressed to find anything acoustically more accurate. I did change the tubes to 5594 USA GE but acoustically the difference was negotiable. Give ''em a shot!
9 people found this helpful
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Top reviews from other countries

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yardo
2.0 out of 5 starsVerified Purchase
Ronzio di sottofondo
Reviewed in Italy on February 19, 2020
Come amplificatore, bisogna dire che fa il suo dovere in parte, nel senso che aumenta il volume dell''audio, ma non apporta alcun miglioramento, anzi si sente un continuo ronzio di sottofondo. Per non parlare poi dell''alimentatore che è di una qualità scarsissima, con...See more
Come amplificatore, bisogna dire che fa il suo dovere in parte, nel senso che aumenta il volume dell''audio, ma non apporta alcun miglioramento, anzi si sente un continuo ronzio di sottofondo. Per non parlare poi dell''alimentatore che è di una qualità scarsissima, con plastiche cinesi, e anche questo emette un fastidioso rumore di continuo. Non pretendevo tanto di partenza visto il prezzo, ma che produca questi rumori proprio non si può accettare.
Come amplificatore, bisogna dire che fa il suo dovere in parte, nel senso che aumenta il volume dell''audio, ma non apporta alcun miglioramento, anzi si sente un continuo ronzio di sottofondo. Per non parlare poi dell''alimentatore che è di una qualità scarsissima, con plastiche cinesi, e anche questo emette un fastidioso rumore di continuo.
Non pretendevo tanto di partenza visto il prezzo, ma che produca questi rumori proprio non si può accettare.
One person found this helpful
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Cliente Amazon
1.0 out of 5 starsVerified Purchase
Scarso
Reviewed in Italy on February 12, 2020
Acquistato per migliorare L audio del telefono in cuffia...si è rivelato un acquisto pessimo...purtroppo avendo buttato l imballo non penso sia possibile restituirlo....sconsigliatissimo
Acquistato per migliorare L audio del telefono in cuffia...si è rivelato un acquisto pessimo...purtroppo avendo buttato l imballo non penso sia possibile restituirlo....sconsigliatissimo
One person found this helpful
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Cliente Amazon
3.0 out of 5 starsVerified Purchase
buono fa il suo dovere
Reviewed in Italy on September 20, 2020
Ottimo a questo prezzo
Ottimo a questo prezzo
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グッズ大魔神
5.0 out of 5 starsVerified Purchase
ろーとるも納得のヘッドアンプ
Reviewed in Japan on December 4, 2020
オーディオに詳しい皆様のレビュー通り、音質、価格、デザイン共に満足出来る1台である。 若い頃から真空管オーディオに親しんできた自分にも、好ましいサウンドとして初老になって大幅に大げさなオーディオコンボを縮小したが、クオリティは落としたくなく、アルテックのパワードスピーカーと本製品、DVDブレーヤをつないで、楽しんでいる。 トータル 二万円もしない現在のコンボでも、十分若い頃の300-500万コンボに対して、不満はない。お薦めしてもよいかも知れないヘッドアンプだ。
オーディオに詳しい皆様のレビュー通り、音質、価格、デザイン共に満足出来る1台である。
若い頃から真空管オーディオに親しんできた自分にも、好ましいサウンドとして初老になって大幅に大げさなオーディオコンボを縮小したが、クオリティは落としたくなく、アルテックのパワードスピーカーと本製品、DVDブレーヤをつないで、楽しんでいる。
トータル 二万円もしない現在のコンボでも、十分若い頃の300-500万コンボに対して、不満はない。お薦めしてもよいかも知れないヘッドアンプだ。
2 people found this helpful
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