FX Audio Tube-P1 Amplifiersearch

FX Audio Tube-P1 Amplifier

FX Audio Tube-P1 Amplifier

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will these drive klipsch cornwalls?
is this a hybrid or a full tube amp? lookin for something cheap and tubey to test with dynamic headphones and iems. thanks
MrMackey
Everything says it is a single ended, SE tube amp, not a hybrid. Not many details, esp. about the transformers,, as you see in the APPJ being Japan sourced Z11 steel: https://www.massdrop.com/buy/appj-1502a-tube-headphone-amplifier & https://www.aliexpress.com/item/APPJ-PA1502A-pure-Tube-Headphone-Amplifier-HIFI-EXQUIS-6n4-6P6P-lamp-headset-amps/32344564558.html I have one of these PA1052A's with upgraded caps and NOS tubes that provides excellent sound. The FX P1 should provide you with the Tube experience, though the tubes usually supplied, are not the best ones to judge tubes on... to be fair you should look at replacing them with some NOS ones. This amp does have MM phono input and speaker outputs, leaning it towards a simplified Phono TT/Tube/speaker setup. Oh, tubes are happier fully inserted and perpendicular.
(Edited)
MrMackey
get the dark voice, it just dropped again. plus 1/2 off tube rolling since it only has two tubes instead of the need to get two matched tubes (preamp/power tubes). its a dedicated headphone amp w/ preamp outputs. ive never used this P1 amp, but i know the dark voice is very popular with the headphone community especially with high impedance headphones (150/300/600 ohm) such as the hd6xx/hd58x. i love mine. unless you want to power speakers/use a turntable too.
(Edited)
To the people who say this amp will only work with high efficiency speakers (IE large horn loaded speakers like some but not all Klipsch designs), I just want to point out that this depends on how you plan on using it. Sound pressure levels increase by 6 dB with each halving of distance. Therefore a 99 dB sensitivity speaker at a 12 foot listening distance has the same perceived loudness as a 93 dB sensitivity speaker at 6 feet and a 87 dB sensitivity speaker at 3 feet. A 2.5 watt amp is not for floor parties unless you're using refrigerator-size Klipschorn speakers. But if you're powering desktop speakers that are 3 feet from your ears, then 2.5 watts will work fine with average 87 dB sensitivity speakers. Another way of looking at is the relationship of amplifier power to listening distance. Obtaining the same sound pressure requires 1/4 the amplification with each halving of listening distance. So 40 watts at 12 feet is equivalent to 10 watts at 6 feet and 2.5 watts at 3 feet.
Will this drive 2 bookshelf speakers hooked up to my PC?
Nasp
if they’re sensitive enough, sure. Look for the dB/Wm figure on the speaker specs. This will be plenty to drive something with a sensitivity of 92dB+ for close range listening. That’s give around 96dB at full volume. For 88dB speakers you’re looking at about 92dB full volume (substantially-less than half as loud as a 92dB/Wm speaker).
Needed at MD, new part time position, Tube Fluffier; properly fully inserted and straight for the photo shoot...
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rastus
omg... tube fluffer... the most awfully wonderful phrase of the day
Would the sound quality be severely degraded if I hooked this up to my PC using a 3.5mm to 2-Male RCA?
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yup
Nasp
You can do that. However, unless you have an upgraded sound card, it won't sound too good. Your best bet is to also purchase a DAC so that you can go USB out instead of 3.5. There are plenty of choices that would fit your needs for under $100.
Only if it had RCA output..
How would this pair with the Klipsch Heresy III speakers. I think they are 98db efficiency.
Buckaboo
They would sound great. The H3 is a great speaker. You could even do the bob c crossover upgrade and get more out of those great speakers. I have H1’s and H2’s and love the sound from a 2 or 3 watt tube amp
A S/N ratio would be nice.
Obviously this isn't a serious tube amp. You would need extraordinarily sensitive horn speakers or giant 15" full rangers used in vintage triode systems -- but if you had speakers like that you'd have a serious tube amp to go with them. Usually I'd require replacing the switching power supply with a linear one, but the transformers are so low-end you might as well keep the wall wart.
GUTB
This could be a great amp for someone first getting into hifi. Get a used pair of old Cerwin Vegas and a three or four hundred dollar turntable and you could have a very nice sounding system for very little money.
What kind of sound signature would this amp with it's tubes (the ones that comes with) has? lets say- how would it go with the HD650 and the HD600? Also, what is the measured frequency response? it doesn't say anywhere online really..
My girlfriend and I are thinking about getting a turntable and speakers. Would this make an adequate amplifier for a turntable speaker setup? If so, what do I need to keep in mind as far as turntable and speaker specs are concerned?
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MM = Moving Magnet. MC = Moving Coil. You can read the Wikepedia entry for "Magnetic cartridge" for more details. Most entry-level turntables will come with a MM cartridge. For speakers, Klipsch R-51M's have a sensitivity of 93 dB @ 2.83V / 1m, with a nominal impedance of 8 ohms.
BubbaHotpe68
As others have said, you will need very efficient speakers which usually means horns. Look for a pair of Klipsch heresies on Craigslist. You should buy the speakers and let the girlfriend buy the turntable. Those speakers will be good for a lifetime but you don't want to be stuck with a cheap improperly maintained turntable.
This can't be used as a preamp feeding a power amp, can it?
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Actually, I have the 2x12v variant, so perhaps I get more power, but you could probably upgrade your supply if necessary.
I feed LS50s with a 3 watt per channel tube amp. This is all for desk listening and it works fine at the quiet levels I listen at.
How do you both turn it on/off and switch inputs? I only see one switch and that's two functions.
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No. Once it is on, it will only cycle between inputs. The long press is 4-5 seconds, and will be longer than you expect.
Jodet
You can just pull out one of the tubes when you're done listening
TYPO!!! Tubes are 6J1 [OK] and 6P1 [NOT JP1]
BTY5-M8Tna
OMG!!!!
LIBY555
I was wondering... thanks for that!
This is a lot of tube amp for the $. Speaker and headphone outputs for this price is a great deal. The 2.5 Watt power rating is probably optimistic, but I run low wattage tube amplifiers paired to high efficiency speakers (94db and up) with great success. A TubeDepot EL84 speaker only equivalent is $175, while a 15 Watt Leben CS-300XS will run you $3K to put it in perspective.
LiquidSmote
I can throw it on my AP, but the 2.5w is probably true for most users at 8 ohms.
Is this worth? Like against a darkvoice with custom tubes?
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Not necessarily. If you have any inclination to tinker, swapping the volume knob and the RLC filter on the headphone output really sounds amazing. My HD800s sound pretty damn good off of this.
Bobthedespot
Details, please, on volume knob and filter. What brands and their sources? Many thanks in advance!