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RSA MUSTANG P-51 . little amp BIG sound . image 1, 28, 30, 55, 59, 61 Reviews, 30, 34 . Post... - Page 74

post #1096 of 1189
Quote:
Originally Posted by Randius View Post
I wish to ask if the Mustang gives significant improvement in SQ over the iBasso D10 with topkit? And does the Mustang have good synergy with the Ortofon e-Q7?
I have a D10 with a Topkit with BG caps. Compared with my RSA Tomahawk or my Headamp Pico, the differences are not night and day, or significant.
post #1097 of 1189
Does anyone know, how does it sound with Shure SRH-840 ? I use it with Sony NWZ-X1050.
post #1098 of 1189

I just "graduated" to a P51 Mustang and so far not particularly impressed just yet. I got a 2nd hand unit with 500 hours on it so no further burn in required. I guess I have to adjust my brain to its sound for a bit.

 

So far my initial impression is that it's not that much different from my GoVibe Petite or from the iBasso Mamba. The real weakness is that it doesn't have a DAC... but that means I can combo it with a uDAC or whatever. 

 

The nice thing is that it's even smaller than the Petite, and a lot lighter because it uses a Li-Ion batt instead of the quad AAA setup on the Petite. 

 

I really like that it drives my HD650 happily... but I'm someone who was happy with how the FiiO E5 drove the HD650.

 

So far not sure if it's money well spent. I guess my ears aren't good enough to appreciate the differences. I mean, they sound really punchy compared to the E5, but the Petite was also quite punchy and very forward and aggressive. 

 

Testing it with a variety of headphones for now to see how they respond to different kinds like the AD700, HD650, DT770, TF10 etc. Hopefully these will grow on me, else I'll return to my seller. But I'm not appreciating it so much so far.

post #1099 of 1189
Quote:
Originally Posted by Mochan View Post

I just "graduated" to a P51 Mustang and so far not particularly impressed just yet. I got a 2nd hand unit with 500 hours on it so no further burn in required. I guess I have to adjust my brain to its sound for a bit.

 

So far my initial impression is that it's not that much different from my GoVibe Petite or from the iBasso Mamba. The real weakness is that it doesn't have a DAC... but that means I can combo it with a uDAC or whatever. 

 

The nice thing is that it's even smaller than the Petite, and a lot lighter because it uses a Li-Ion batt instead of the quad AAA setup on the Petite. 

 

I really like that it drives my HD650 happily... but I'm someone who was happy with how the FiiO E5 drove the HD650.

 

So far not sure if it's money well spent. I guess my ears aren't good enough to appreciate the differences. I mean, they sound really punchy compared to the E5, but the Petite was also quite punchy and very forward and aggressive. 

 

Testing it with a variety of headphones for now to see how they respond to different kinds like the AD700, HD650, DT770, TF10 etc. Hopefully these will grow on me, else I'll return to my seller. But I'm not appreciating it so much so far.


I think you will begin to appreciate the additional micro-detail and spaciousness when listening to the P-51, if your source is resolving enough or your music files are high enough resolution to send the extra information to the amp.  I had a few amps with a similar sound signature, but the conveyance of the realism of the performance always sunk in as better with the P-51 as I listened over time.

post #1100 of 1189

Yeah, I think it's something I have to spend time on to really appreciate. Not sure my wallet is gonna appreciate it though, but such are the sacrifices we make in this hobby. :D

 

My problem is that my source is not so good, I don't have a decent DAC, but I did try this super el-cheapo DAC we have locally (costs about $4US -- but it sounds really good believe it or not).

 

Using FLAC Dave Matthew's Band on Foobar, I think I have a good source player and source music, just need a better DAC I guess to really get the details to the amp.

 

I'll spend more time with this before I decide whether it was worth all the money or not. It's definitely better than the E5, and I do like it better than the Petite, but the differences fall sharply into the "diminishing returns" category considering it's about 3x the price I paid for the Petite and 10x that of the E5.

 

post #1101 of 1189

I've been using p51 for a year or so, the best buy I've ever made. Now thinking of upgrading my headphones. Does anyone know that if it works with ed8? Cheers!

post #1102 of 1189

When I moved from the FiiO E5 to the P51, I heard a huge improvement.  It felt like I was listening to my head phones on my home rig.

 

One of the most marked improvements were with the K271's.  I had almost no bass and it was a bit tinny, but with the P51 I heard a huge improvement in the low end and a much fuller sound.

post #1103 of 1189

I received my P51 Mustang from HeadphoneAddict almost two weeks ago, and all I have to say is WOW.  They make even my cheapest IEM's sound incredible...they make my Beats by Dre Studios go from about a 3/10 to an 8.5 seriously.  This is an amazing little amp that should not be overlooked.  I think it may be one of, if not, the best amps for IEM's on the market.  The battery life is incredible, now I am glad I didn't go with the SR71A..., and the mids improvement is the best of any portable amp I have yet to try.  The soundstage is at least doubled, along with the enhancement to the highs and lows....absolutely incredible.  If this amp can make my Studios sound like this, I wonder what they would do to a much higher impedence OEM.  Anyways, the day I bought this amp I called Ray and expressed my amazement with his product.  I have the Arrow 12HE on the way, and have a few other amps to compare it to, but for portability this is one of the best out there.  Especially for universal IEM's, which at this point is all I own.  I have grown extremely attached to my P51 and feel like SkyLab's impressions were spot on.  I was only using a cheap Japanese-made LOD when I first got this amp and was using mainly my iPhone 3G-S and iPod 160G 6G when I first received this little gem.  Even then it was like night and day, I was so impressed that I showed a lot of friends and family, who not too audio savy, even they could tell an improvement.  This little amp is truly a marvel, I can't wait to get my PicoSlim and Arrow to do a direct comparison but for the time being I am perfectly content.  By the way, HeadphoneAddict is an amazing person to deal with when purchasing or selling anything, I HIGHLY recommend him and this amp yes.   


Edited by sdotfire - 5/8/10 at 1:54pm
post #1104 of 1189
Quote:
Originally Posted by sdotfire View Post

I received my P51 Mustang from HeadphoneAddict almost two weeks ago, and all I have to say is WOW.  They make even my cheapest IEM's sound incredible...they make my Beats by Dre Studios go from about a 3/10 to an 8.5 seriously.  This is an amazing little amp that should not be overlooked.  I think it may be one of, if not, the best amps for IEM's on the market.  The battery life is incredible, now I am glad I didn't go with the SR71A..., and the mids improvement is the best of any portable amp I have yet to try.  The soundstage is at least doubled, along with the enhancement to the highs and lows....absolutely incredible.  If this amp can make my Studios sound like this, I wonder what they would do to a much higher impedence OEM.  Anyways, the day I bought this amp I called Ray and expressed my amazement with his product.  I have the Arrow 12HE on the way, and have a few other amps to compare it to, but for portability this is one of the best out there.  Especially for universal IEM's, which at this point is all I own.  I have grown extremely attached to my P51 and feel like SkyLab's impressions were spot on.  I was only using a cheap Japanese-made LOD when I first got this amp and was using mainly my iPhone 3G-S and iPod 160G 6G when I first received this little gem.  Even then it was like night and day, I was so impressed that I showed a lot of friends and family, who not too audio savy, even they could tell an improvement.  This little amp is truly a marvel, I can't wait to get my PicoSlim and Arrow to do a direct comparison but for the time being I am perfectly content.  By the way, HeadphoneAddict is an amazing person to deal with when purchasing or selling anything, I HIGHLY recommend him and this amp yes.   


I'm glad everything worked out for you.  The P-51 was my favorite portable amp until I got the Protector to listen to my JH13pro and HD600 in balanced mode off the Macbook, and the Slim for my ES3X in my portable rig.  Between these two amps, I get enough variation in sound, power and size to match just about all my phones and mobile needs.  But the P-51 strikes a happy balance between the two in all those areas.  I'll be posting more impressions of the Protector and Slim in the other threads over time, so I'll try to not go off topic here.  I do miss the P-51, as it was a great jack of all trades and master of some (as opposed to none). 

post #1105 of 1189

After some more quality time with the Mustang, I've come to appreciate just a little more of their greatness, but I still don't think they're worth the price of admission.

 

The mids on these are really nice. They get fuller and more substantial though strangely without adding much weight. Unlike using the FiiO E5 or the P4 where lots of "meat' and "weight" are added to the sound, this one still sounds lean, clean and squeaky while being suitably more substantial. It's an amazing dichotomy and strangely appealing.

 

The soundstage sounds wider but isn't a night and day improvement.

 

What I really appreciate is the build quality and battery life of this unit, been playing with them for 3 days now and haven't had the need to charge them at all. And I even left them on overnight by mistake. Battery life reminds me of the Petite, definitely comparable to it.

 

All in all I think it's a more refined version of the Petite, with less meat and emphasis on the bass but same aggressive, forward, punchy nature. And much cleaner. And much more expensive. :)

 

I can recommend this to anyone who has the dough for it. Me... I do have the dough for it... but having second thoughts sending it that way. I think my money could be better spent elsewhere. 

post #1106 of 1189

I think if you live with the P51 for couple of years like I did, you will appreciate it more than just four five days with it.  I am missing the P51 sound already now that I am using the Protector.  In a way, I felt the P51 is better than the Protector in terms of mid range, vocal, and fun factor.  That's why I am still holding on to the P51 and not selling it.

post #1107 of 1189
I purchased a used P-51 with 160 hrs on it and did not care for the sound compared to my 600+ hr Hornet M but after 300 hrs I am really loving it I can't wait to reach 400 on this great little amp.
post #1108 of 1189

My 2c...

Had my P51 for about a year now. Have run everything from PX100s to SE530 to Ed8 through it. Found it to be neutral, good mid-range and decent bass. Sources used include Nano, iMod, Macbook and iPad all in WAV. All work equally well, though SQ is particularly good with iPad. Made some comparisons with RSA Shadow. The latter didn't have the same power, clarity and soundstage IMO. Would highly recommend it, only thing missing would be a DAC for which one can get from the Predator. Would love to try the ALO RX....

post #1109 of 1189

hi there i recently acquired a rsa p-51 but i have a problem, when i turn the volume loud the bass becomes scratchy, like their broken or fall appart, but the mid and the high stays ok.

I tested it with different source (computer and mp3) and outpout ( k701 and hifiman Re0 iem's) and cables, but the result is still the same so i assume its the amp. I use the "high" swtich for the headpones and mid/low for the iem's but it doesn't change the problem.

post #1110 of 1189
Thread Starter 

Does it do it at all volumes or just when you turn it up to a louder setting?

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