MichaelHiFi Posted March 17 Posted March 17 (edited) The MP701 MK3 really impresses me. The Jupiter cap will need a page of glowing attributes. Crazy. I've got a problem. I've got 2 very fine phono stages. An Allnic H5500 and a MoFi Master. Like that's a problem... I'm going to have to part with one. Around a month ago, my wife and I performed a serious phonostage battle between these two units. Which one toke the honors you ask. Well, neither really. They are both REALLY GOOD. My wife preferred the Allnic and it was a split decision for me as I really like 'current injection' in the MoFi. But that's not the problem. The problem is that the Allnic won't play through the MP701. I don't remember if I used the Allnic since I took ownership of the MP701. I know it played through the Acoustic Invader preamp. If I bypass the the MP701 and send the outputs to my integrated amplifier, it plays great, although I lose the woofer section of the Aeris speakers. What might be happening is that the cables running to the MP701 are balanced. The Allnic is only RCA. I use Cardas adapters for the connection. This has not been a problem for either the Acoustic Invader pre or the Integrated. But I wonder if it is a problem with the 701? Would it have anything to do with the negative feedback which I thought was simply output gain control? I had just learned that the 2 RCA outputs 1 and 2 are low and high gain! Well, my phono stage likes high gain but my DAC likes low gain so IDK. I really want to hear the Allnic phono with the MP701. Edited March 18 by MichaelHiFi
Newf Posted March 18 Posted March 18 Since the Allnic is RCA, try using an RCA cable to the MP701. The XLR input on the MP701 is not a true balanced connection anyway, it's there for convenience. 1
MichaelHiFi Posted March 18 Posted March 18 I wanted to avoid that due to the fact that it's a very long run to my turntable gear using a very expensive cable. I could sell the Allnic as the MoFi has balanced outputs, but, I'm very attached to it.
Niekos Posted March 18 Posted March 18 On 17/03/2025 at 10:46 PM, MichaelHiFi said: I had just learned that the 2 RCA outputs 1 and 2 are low and high gain! Expand You have the MK3 version, right? The different gains for the RCAs were only present for the first/mk1 version (when I compare https://www.musicalparadise.ca/files/MP-701.pdf to https://musicalparadise.ca/files/MP-701-MK2-Manual.pdf ). So I do not think you would have to worry about this? On 17/03/2025 at 10:46 PM, MichaelHiFi said: The Jupiter cap will need a page of glowing attributes. Crazy. Expand Sounds interesting. What value and how did you install it? On 17/03/2025 at 10:46 PM, MichaelHiFi said: The problem is that the Allnic won't play through the MP701. Expand You have no sound at all? That is strange, since the XLR are as mentioned only for convenience and converted to single ended anyway? It might be your cardas adapters? Do you know how these are wired?
Smokeyhill Posted March 18 Posted March 18 I was just wondering, I am currently running the following caps: 2 x 2.2uF 400Vdc V-Cap ODAM Capacitors , with 1 x Duelund Capacitor 0.47uF 630Vdc CAST-PIO-Hybrid Cu/Ag Series Copper/Silver Foil Wax Paper Oil Has anyone tried running: 2 x 2.2uF 400Vdc V-Cap ODAM Capacitors, with 1 x 0.47uF 630Vdc V-Cap ODAM Capacitor
MichaelHiFi Posted March 18 Posted March 18 On 18/03/2025 at 7:43 PM, Niekos said: You have no sound at all? That is strange, since the XLR are as mentioned only for convenience and converted to single ended anyway? It might be your cardas adapters? Do you know how these are wired? Expand No, no sound at all. My Cardas adapters have been working flawlessly through the Acoustic Invader preamp. I don't yet know how they are wired. I'm going to move my preamp and turntable next to the MP701 just to test using RCA's. I just sold my Acoustic Invader preamp. That took about 5 seconds. The audiophile person just got himself a rare (in the US) and great preamp. Now I really need the up my game
Niekos Posted March 18 Posted March 18 On 18/03/2025 at 9:43 PM, MichaelHiFi said: I just sold my Acoustic Invader preamp Expand Wow, you think the mp701 is better? What preamp did you have exactly, the fulcrum? Only know that model from iiwi reviews on YouTube. On 18/03/2025 at 9:43 PM, MichaelHiFi said: I'm going to move my preamp and turntable next to the MP701 just to test using RCA's. Expand I think you will have sound, at least I hope so for you
MichaelHiFi Posted March 18 Posted March 18 On 18/03/2025 at 9:51 PM, Niekos said: Wow, you think the mp701 is better? What preamp did you have exactly, the fulcrum? Only know that model from iiwi reviews on YouTube. Expand Better? The Jupiter cap settled in. The difference the Jupiter made in my system was astounding on many levels. Songs that I've been familiar with for decades suddenly became unwrapped - laid bare - and it wasn't so much what, mor, how the MP701 the 701 was performing, rather, it was what the capabilities of the Allnic DAC and the HiFiRose R130 was capable of. And it didn't matter the age of the recording. The "unraveling" unearthed the breath of vocalists even from the 1960's recordings. The clarity was something I had never experienced in all my years of performance audio. I've said at times in my reviews, "I can finally hear the vocals" or something to that effect. I didn't know better because I'd never heard this level of "laid bare". There was so much separation, just amazing. I can't wait to get out to Axpona in 3 weeks to hear what could compare. Moving the MP701 ad the Allnic DAC/HiFiRose upstairs with the big Ushers too, was revelatory. The wife was grooving to the sound of a club as it's a much bigger room and the Ushers were playing appropriately BIG. Many of the songs I played were breathtaking and then there were some that were... strange. On Neil Young's "Cortez the Killer", his guitar was so removed from the song, so alone, by itself, out in front of the left speaker, that it was distracting from the whole. Some older songs were unlistenable. And some female vocals were too bright if the recording wasn't well recorded. My wife agreed., So I removed the Magic Link 2 balanced cables and installed the Verastar's, a 'softer' balanced cable. Music was beautified at the expense of some much detail, but we tamed the brightness. We will continue the upgrade and tuning. The Invader is a great preamp. I think the MP701 MK 3 allows for my Allnic DAC to breath. Perhaps there was a mismatch in gain or impedance, I don't know. Maybe it's just the Jupiter cap and the tubes that came together. I thought about the Fulcrum, but too difficult to buy and, expensive. I got a story. I need to sell a phono stage. It appears that the Allnic H5500, being 15ft away and only RCA out is a problem. The MoFi is both balanced and single ended, so it works. But when I tested the MoFi using the adapters, even the MoFi wouldn't work, so the MP701 doesn't like the adapters and running long lengths of RCA is a bad idea, especially my very expensive balanced cables become useless, and I'm not selling them. Just before I came to write this post, while testing the MoFi phono, there were dropouts. Weird. Then there was smell. I looked over at the Allnic Integrated with those big KT170's, and one of them was glowing purple! So pretty 1
MrBurns84 Posted March 19 Posted March 19 On 17/03/2025 at 10:46 PM, MichaelHiFi said: The Jupiter cap will need a page of glowing attributes. Crazy. Expand My endgame cap really, after rolling in mundorfs, clarity caps, vcaps, duelunds. Its really that good IMO, but not cheap. 1
andyr Posted March 19 Posted March 19 On 19/03/2025 at 3:46 AM, MrBurns84 said: My endgame cap really, after rolling in mundorfs, clarity caps, vcaps, duelunds. Its really that good IMO, but not cheap. Expand I presume the copper foil, paper & wax ones? 100v, 400v or 600v? 1
MrBurns84 Posted March 19 Posted March 19 On 19/03/2025 at 5:41 AM, andyr said: I presume the copper foil, paper & wax ones? 100v, 400v or 600v? Expand yes, copper foil in paper & wax 400v
Niekos Posted March 19 Posted March 19 On 19/03/2025 at 8:12 AM, MrBurns84 said: yes, copper foil in paper & wax 400v Expand And what value(s) do you use? Do you use them for both power and coupling capacitors?
andyr Posted March 19 Posted March 19 On 19/03/2025 at 8:23 AM, Niekos said: And what value(s) do you use? Do you use them for both power and coupling capacitors? Expand Seriously??? Using Jupiters for power supply smoothing capacitors (10s of 1000s of uF) would: a. take up an enormous amount of space, and b. would cost thousands of dollars!
andyr Posted March 19 Posted March 19 On 19/03/2025 at 8:12 AM, MrBurns84 said: yes, copper foil in paper & wax 400v Expand I read somewhere that for coupling duties ... lower voltage caps sound better than high voltage. But I've never done the experiment.
Niekos Posted March 19 Posted March 19 On 19/03/2025 at 10:41 AM, andyr said: Using Jupiters for power supply smoothing capacitors (10s of 1000s of uF) would: Expand I mean the power filtering bypassing capacitors. The value can be from 0.01uf to 10uf (according to the manual).
Niekos Posted March 19 Posted March 19 On 19/03/2025 at 10:43 AM, andyr said: lower voltage caps sound better than high voltage Expand Maybe, but the voltage of these capacitors need to be 350V or higher.
Niekos Posted March 19 Posted March 19 (edited) It is what the manual states: Quote Coupling Capacitors Replacement The coupling capacitors can be changed by the users to get different sound characteristics or improve sound quality. The stock capacitors are 630V 2.2uF. If the power amps + active subwoofer total impedance is higher than 47Kohm, minimum 1.5uF can be used. If it is lower than 47Kohm, need to use 2.2uF to 4.7uF. The voltage of the capacitors need to be 350V or higher. Expand Who am I to disagree with Garry Edited March 19 by Niekos 1
MichaelHiFi Posted March 19 Posted March 19 On 19/03/2025 at 5:41 AM, andyr said: I presume the copper foil, paper & wax ones? 100v, 400v or 600v? Expand I have the 2.7uf 600volt version. I wish that Chris at Jupiter Condenser would communicate with me. Phone call and emails go unanswered as the 2.7uf cap sits above the the level of the chassis. 2.2uf might work, but I won't know until I get a reply. I had Jupiter caps in my GR-Research Super V speakers controlling the mid/highs. Great sound from those speakers but I didn't warm to the bass. Not a fault of the caps fault of course.
MichaelHiFi Posted March 19 Posted March 19 On 19/03/2025 at 10:43 AM, andyr said: I read somewhere that for coupling duties ... lower voltage caps sound better than high voltage. But I've never done the experiment. Expand Say it ain't so. I got the 600V version!
MrBurns84 Posted March 20 Posted March 20 (edited) On 19/03/2025 at 8:23 AM, Niekos said: And what value(s) do you use? Do you use them for both power and coupling capacitors? Expand No just for the output coupling caps - 2.2ufs 400v On 19/03/2025 at 10:43 AM, andyr said: I read somewhere that for coupling duties ... lower voltage caps sound better than high voltage. But I've never done the experiment. Expand Actually.....i had tried both 400v and 600v versions on the preamp... the 600v one's were borrowed to get the flavour of the Jupiter's in the preamp. And obviously bought the 400v's as the 600v's were on backorder for the 2.2uf's. Luckily tested them and ended up preferring the 400v ones Edited March 20 by MrBurns84 2
Baci Posted March 23 Posted March 23 On 09/03/2025 at 7:36 PM, Niekos said: Sure, you can find it here. Note: as you can see there is no option in black without indicator, but I did receive one. So no guarantees here.... Expand Ordered two knobs from the link you provided and they arrived today. Fitted them, and I think they look fantastic. Total cost including postage - AU$15. a pretty good non-audio bang for the ol' buck. 1
Niekos Posted March 23 Posted March 23 Great! I also ordered these knobs again (stated as with indicator), and again knobs with no indicator were delivered (like yours). However, I think it looks great. And I do not really miss the indicator I must say?
andyr Posted March 23 Posted March 23 On 23/03/2025 at 10:13 AM, Niekos said: Great! I also ordered these knobs again (stated as with indicator), and again knobs with no indicator were delivered (like yours). However, I think it looks great. And I do not really miss the indicator I must say? Expand C'mon guys - how the hell do you know whereabouts the knob is pointing to - if there's no dot or line? If I had bought them ... I would take a hacksaw and cut a small line across the outside edge of each disc, in the appropriate place, to act as a marker.
Pele1969 Posted March 24 Posted March 24 Another upgrade option, although there is a need for a soldering iron, is maybe the gray capacitor located near the rectifier tube. Or is it a capacitor? What is that thing?
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