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ALO Audio RXMKIII Balanced Portable Amplifier Impressions - Page 48

post #706 of 910

Is it normal for there to be a "pop" sound in the drivers when turning on the amp with headphones connected? It seems to happen w/ the IE80s (16ohm), sometimes that sound can be really loud if I have them in my ears when turning on the amp. Haven't paid attention or noticed it yet with the HD650s (300ohm) though, maybe I should see if it happens with it too... all single-ended right now btw.

 

Hope that pop isn't damaging the drivers or anything. Other than that, hm... slowly getting used to my new Rx MK3-B+. It's weird, a lot more "clinical" sounding than my old SR-71 (doesn't have that low-mid end warmth on the SR-71), and is a lot more detailed instead... in fact, I find the low-mid range to be quite a bit more detailed on the Rx MK3-B+ so far when compared to the SR-71.

 

When I first got the amp, I wasn't too impressed tbqh... but after the past few days of burn-in, it seems to be slowly "getting there", and I'm actually quite impressed with its accuracy and detail. Only using single-ended (backend) right now... waiting on some balanced cables right now, but still considering maybe getting a temp balanced IC from TTVJ (either the ALO or CablePro one) and try to balance the amp's backend at least to see if it would provide more power/clarity/mW/etc for my (currently) single-ended HD650s (waiting on a balanced cable for them too.)

 

The amp does have its minor quirks (as mentioned), but so far I like it for the most part. Quite an "upgrade" from the SR-71, although the SR-71 is pretty good at what it does (a "warmer" amp sound-signature) too. There is background hiss with my IE80s (16ohm), even on low-gain, but it seems to be tolerable for the most part... hoping maybe going balanced eventually will help a bit. But yeah, the noise-floor isn't totally "black"/quiet as it is with my other amps.

post #707 of 910

I just got this "Etymotic" resistor adaptor

 

http://www.ebay.es/itm/ETYMOTIC-ER4P-TO-ER4S-RESISTOR-ADAPTOR-3-5MM-PLUG-/290372905689?clk_rvr_id=536022465171

 

 

and removes the noise completely when using my CIEMs in the Rx MK3-B. I did not notice any SQ degradation so it might be worth a try for those trying to get rid of the noise.

 

Cheers

post #708 of 910

Balancing the back-end actually is quite an improvement in my opinion over single-ended... it probably (I'm assuming) provides the increased mW output using the balanced back-end for both the single-ended and balanced headphone outs; so far I think it's worth it. Using an Etymotic ER4P-to-ER4S 75ohm impedance adapter helped to remove the background hiss and 'over-sensitivity' with my IE80s, and so far it sounds pretty damn good. Soundstage, imaging, separation, and dynamic-range are very impressive with the back-end balanced (using the CablePro Reverie portable balanced IC), especially with the IE80, and provides a "3-dimensional" out-of-head sound that I often confuse what I'm listening to for the sounds in my environment.

 

The only issue that I have now is that I can't listen to the amp in balanced mode while charging the battery/with the power supply connected to the amp, as there seems to be a faint but persistent power-related humming/clicking sound (like you can 'hear' the battery being charged) that is audible at higher volumes in all gain-modes. Don't have this issue with the single-ended mode, but I highly prefer using balanced due to the sound quality, so I've been having to run the amp unplugged from the charger and re-charge it every so often for now... I considered that it might be a 'ground-loop' issue, so I connected the power-supply charger to a different power-strip that my CLAS -dB is plugged into, but it didn't help, so idk.

 

I did email ALO support twice earlier in the week about this issue but haven't received a reply yet, :/.

I'm hoping they'll respond soon.


Edited by refault - 11/3/13 at 6:59am
post #709 of 910
Quote:
Got my RxMk3b+ last week. Really happy with it. Using it to drive my AK120 feeding into Fitear TG334 or Fostex TH900.

Sidrpm,

When driving your AK120 by the Mk3, how do you by-pass the AK amp section ?

post #710 of 910
Quote:
Originally Posted by cladane View Post
 

Sidrpm,

When driving your AK120 by the Mk3, how do you by-pass the AK amp section ?

 

The headphone output is also a line out to connect to external amp.

post #711 of 910

Yes line out but the point is that the signal passes through a first amp (AK120 one) and then enters into a second one (the external one). Isn't it bad for the SQ since the AK120 line out is yet amplified for cans and not a drive like line out ??

post #712 of 910

Yeah, it's kind of weird... been having that sporadic "blinking green light" on the charge mentioned earlier on in this thread, along with the 'power/ground hum' in the background through the headphones when charging the amp in balanced mode.

 

ALO said they would take about a week or so to repair the item and I'd have to pay for return shipping to them out of pocket, which honestly makes me somewhat disappointed for numerous reasons, but mostly because I don't want to be without the amp for a week, lol.

 

Maybe I'll fulfill the warranty service sometime later in the future instead when I get a backup amp that's of similar sq (the 30-day period doesn't seem to offer any benefits for my issue I guess).


Edited by refault - 11/7/13 at 1:43pm
post #713 of 910

Gotta love ALO, and Ken`s passion for his work.  

 

Thanks everyone for this incredibly useful thread.  For anyone who`s interested, I can report that my ALO Continental V2 is essentially dead silent with the 9-ohm SE846.  Even at full volume and high gain, there is only the very faintest mid-frequency `hiss`, with and without the iBasso DX50 plugged in. 

 

d


Edited by Dopaminer - 11/11/13 at 6:15am
post #714 of 910
My 3 stacks that can drive my Abyss very good for portable use

It is not optimal to drive Abyss only with portable set up , for take the fuller SQ must drive use desktop rigs

Source : iPhone 4 s Mod
Dac : Cyberlabs Class dB 2.00 Vrms version
Amp : ALO Rx 3 B
Headphone : Abyss 1266
Cable : mini to mini diy
Mini USB to Lod diy
Adapter mini to USB


post #715 of 910

Has anyone directly compared the Apex Glacier to the Alo Rx MK3? If so, thoughts?

post #716 of 910

Recently ordered the B+ 

Will be using it with the LCD-XCs paired with the CLAS-dB fully balanced input to output.

Very excited!!! 

post #717 of 910
Quote:
Originally Posted by SHAHZADA123 View Post
 

Recently ordered the B+ 

Will be using it with the LCD-XCs paired with the CLAS-dB fully balanced input to output.

Very excited!!! 

Wow, this sounds like a power rig in the making. Congrats.

 

Do share your impressions once you are ready.

post #718 of 910
Quote:
Originally Posted by sidrpm View Post
 

Wow, this sounds like a power rig in the making. Congrats.

 

Do share your impressions once you are ready.

Thanks!

I will post some thoughts on this, especially compared to the RSA71B

post #719 of 910

Just ordered the MK3-B+. Will be receiving it by Wednesday. I am super pumped to see it in action with my LCD-2s. I was underwhelmed with the LCD-2s with SR71-B. SR71-B was great with my Shure SE846s, but not with the LCD-2s.

post #720 of 910

I picked up the Mk3-B+ and a balanced Green Line for my LCD-2's in the recent Black Friday weekend sale.

 

Very impressed so far! I had the Mk2 which was already quite nice but this is a large upgrade I would say.

 

Drives them with much more authority and in particular the soundstage is a lot more impressive. Admittedly quite an expensive upgrade once you factor in the cable.

 

I use it with a CLAS -db and ipod or galaxy s4. Can't keep up with my desktop set-up (Violectric V800 -> V200) but exceptional for something that is portable (I quite like listening to music in bed at night which this is perfect for).

 

Not a huge fan of it with the HD650's yet but haven't given this pairing much time. Certainly a more lively sound than with the V200 which should suit certain music I am sure.

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