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**MrSpeakers Mad Dog: Impressions and Discussion Thread** - Page 68

post #1006 of 2885
Quote:
Originally Posted by jibzilla View Post

Quote:
Originally Posted by wolfetan44 View Post

Bought a Bottlehead Crack, and I use the O2/ODAC with my Paradox. 

Got a bit of heat for saying this in the th-600 thread but I still feel that the majority should be spent on the headphone itself. Can you really enjoy a headphone amp or dac without the headphone? You can I guess, but it better look amazing. Just get the mad dogs and if you feel like it later upgrade your amp and dac.

I have a Paradox/HD650/DT880 modded with wood cupsconfused_face.gif

post #1007 of 2885
Quote:
Originally Posted by wolfetan44 View Post
 

I have a Paradox/HD650/DT880 modded with wood cupsconfused_face.gif


Edited by jibzilla - 6/3/14 at 5:41am
post #1008 of 2885
Quote:
Originally Posted by robrob View Post

 

The signal does swing in opposition during its trip to and from the headphone driver through a 4 conductor headphone cable. The line is balanced from the TRS connector at the amp to the headphone where it is subject to RFI--every electron that goes through the + wire goes through an identical - wire in the headphone cable. It would be unbalanced if the negative wire were tied to a common ground bus such as the cable braided shield.

 

Having the two - wires connected to ground between the Jack and the headphone makes this ELECTRICALLY (but not physically) a three wire cable.  Connecting the L- and R- to ground at any point means they are both at 0 Volts along the entire length of their cable therefore they act as one cable.  The - is now ground which by definition is always at zero volts (except for minor cable V) so it doesn't pick up any noise noise (well, way less), so there is nothing material to cancel the noise on the + line.   

 

Trust me on this, but if not, I suggest you post on Sound Science and I'd be happy to discuss further.  It's not intuitive, but beyond saying that the and 3 pin terminated adaptor or cable makes the headphone single ended, I fear we'd be veering OT.

 

Long and short is this doesn't happen on the Mad Dog

post #1009 of 2885
Quote:
Originally Posted by mrspeakers View Post

 

Connecting the L- and R- to ground at any point means they are both at 0 Volts along the entire length of their cable therefore they act as one cable.  The - is now ground which by definition is always at zero volts (except for minor cable V) so it doesn't pick up any noise noise (well, way less), so there is nothing material to cancel the noise on the + line.   

 

Trust me on this, but if not, I suggest you post on Sound Science and I'd be happy to discuss further. 

 

So where does the - wire go to 0 volts--as it leaves the headphone driver? Does the signal in the + wire suddenly flatline when it exits the driver and flows through the - wire? I understand balanced wire antennas and the circuit from the single ended TRS jack to the headphone driver and back looks like a balanced antenna for RFI purposes. The difference between this and a 3 wire cable is that the two signal wire pairs in the cable are exactly the same gauge and length so they pick up the same RFI. All circuits, even balanced wire antennas end up at ground--a balanced headphone amp combines the two signal grounds inside the circuitry where a single ended cable combines them at the chassis.

 

I'll take your advice and check out Sound Science.

post #1010 of 2885
Well, I got my Sansui 5000A in. It's in wonderful condition and sounds great with the MD 3.2! You can check out this post and this post in another thread for more details and pictures, but I'll throw up a couple pics here too:



post #1011 of 2885
Quote:
Originally Posted by robrob View Post

So where does the - wire go to 0 volts--as it leaves the headphone driver? Does the signal in the + wire suddenly flatline when it exits the driver and flows through the - wire? I understand balanced wire antennas and the circuit from the single ended TRS jack to the headphone driver and back looks like a balanced antenna for RFI purposes. The difference between this and a 3 wire cable is that the two signal wire pairs in the cable are exactly the same gauge and length so they pick up the same RFI. All circuits, even balanced wire antennas end up at ground--a balanced headphone amp combines the two signal grounds inside the circuitry where a single ended cable combines them at the chassis.

I'll take your advice and check out Sound Science.

Exactly. On leaving the driver the wire connects to ground and is a current sink. On a schematic this is why you always see all grounds connected to earth. The may be trace voltage due to current in the wire but otherwise the voltage is zero. Don't be confused by how many wires there are, it is what they connect to that matters.... If you start a discussion pm me and I can stick in a few references for the theory...
post #1012 of 2885
Quote:
Originally Posted by hans030390 View Post

Well, I got my Sansui 5000A in. It's in wonderful condition and sounds great with the MD 3.2!

 

Okay, time for a question, a sort of poll... Fill in the Blank:

 

My Mad Dog version 3.2 sound really good through my vintage receiver, the __________ .


Edited by kstuart - 8/1/13 at 9:06pm
post #1013 of 2885
Thread Starter 

^^ Sansui 9090 (sublime), Marantz 2270b (wow!!) Pioneer sx-65 (how much did I pay for my dedicated hp amp?) blink.gif

 

 

Vintage rules, baby. very_evil_smiley.gif

post #1014 of 2885
Tell that to those who spent megabucks on hp amps and you'll be dead in no time.
post #1015 of 2885

I got my Mad Dogs two weeks ago from a forum sale (I believe its a 3.0). I bought them for use in the office, but I loved how they sounded so much on my home set-up that I am now thinking of getting a second pair so I don't have to keep shuffling this pair back and forth.

 

They respond so well to amping, I am thinking of upgrading my other in-office equipment to accomodate them (probably going to go line-out with the DX50 into a Magni or Asgard). But they work great with my Leckerton 6UHA Mk II/Cowon X7 combo too.

 

Easily a $1000+ sound for around $300. For most applications, they are endgame or at least reference quality.

 

******* bravo, Mr Speakers.

post #1016 of 2885
Quote:
Originally Posted by kstuart View Post

 

Okay, time for a question, a sort of poll... Fill in the Blank:

 

My Mad Dog version 3.2 sound really good through my vintage receiver, the __________ .

Dynaco PAT-4, Kenwood KA-7300 (though I find this one too warm), and some old Sansui a friend has in his basement.

post #1017 of 2885
Quote:
Originally Posted by Greed View Post

Interesting.. not sure why the other thread was locked. Either way, I'm a proud owner of the MD 3.2. They sound great so far, and I am really starting to warm up to the more forward presentation. Since the purchase of my MD's, I have sold all my mid-fi headphones that I used to own. The MD's fit the bill for me and I use them daily when working and doing school work. Surprisingly, the M-Stage is quite good with the MD's. I'm upgrading my B22, so for now, the M-Stage is keeping the MD's company. Really enjoying the combo. 

I love you :O [jk] But I am now the proud owner of an M Stage [with a nice lean LME 49990 in it[ My last mad dogs sounded HORRIBLE with every Hybrid Tube I owned... so I got the M Stage [and loved it with my dt 880s] And The Trebele on the M Stage is GREAT, it kicks my Clear Top RCA Hybrid Tube in the Tuckus! 

 

Non the less, I had maybe 3.1 and for me it was to dark out of my hm 601 and my E11 [as well as too dark out of my oDac and my Hybrid Millet Tube]

That being said, I want to own the MD's again [they isolated wonderfully] suggestions on a good DAP amp portable combo to open the Sound Stage and tighten the MDs up. I'm thinking the Fiio X3 [buying my MDs again in October] with a e12 or an JDS Labs C5.

 

So from the users who already have it any suggestions? [And btw I still love my Ath w1000x, but there's no way in hell I'm carrying those to Class with me]

post #1018 of 2885
Quote:
Originally Posted by kstuart View Post

 

Okay, time for a question, a sort of poll... Fill in the Blank:

 

My Mad Dog version 3.2 sound really good through my vintage receiver, the __________ .

 

Marantz 2230, 2270 

 

Rotel RX-1603

 

Kenwood AR-9600

 

McIntosh 1700 (Tried the MC225, I think with the right tubes you can have a dreamy setup - current tubes that were on there were a bit dry)

 

Fisher 500C

 

Dynaco ST70

 

Just some of the few that I've tried out. There were others, but they didn't sound as good as these. My favorite was probably the Rotel or the Mac. 

post #1019 of 2885
Quote:
Originally Posted by Mshenay View Post

I love you :O [jk] But I am now the proud owner of an M Stage [with a nice lean LME 49990 in it[ My last mad dogs sounded HORRIBLE with every Hybrid Tube I owned... so I got the M Stage [and loved it with my dt 880s] And The Trebele on the M Stage is GREAT, it kicks my Clear Top RCA Hybrid Tube in the Tuckus! 

 

Non the less, I had maybe 3.1 and for me it was to dark out of my hm 601 and my E11 [as well as too dark out of my oDac and my Hybrid Millet Tube]

That being said, I want to own the MD's again [they isolated wonderfully] suggestions on a good DAP amp portable combo to open the Sound Stage and tighten the MDs up. I'm thinking the Fiio X3 [buying my MDs again in October] with a e12 or an JDS Labs C5.

 

So from the users who already have it any suggestions? [And btw I still love my Ath w1000x, but there's no way in hell I'm carrying those to Class with me]


I'm a fan of the iBasso PB2 / DB2 combo, balanced (or SE, nice either way) amp / dac combo.  Portable, but a bit clunky.  Sounds great with the MD's though.

post #1020 of 2885

Any one use this Can with a JDS Labs c5? How well does [or would] that amp scale the Sound Stage. My 3.1 rev Mad Dogs sounded horribly crampt on cheap amps [they REALLY opened up on more powerful and better quality amps] 

 

Ofc, I'm sure they'd sound GREAT out of my Lean Matix M Stage but gawd forbid I carry that around with me lawl 

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