Karma - Monoprice Fabulousness!

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  • mhardy6647mhardy6647 Posts: 17,623
    edited June 13
    lightman1 wrote: »
    To reiterate...
    My amp is not in your house?

    That is correct :)
    It is in an undisclosed location -- Dick Cheney may be groovin' to some tunes on it, I suppose.

    ;)
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • mhardy6647mhardy6647 Posts: 17,623
    pitdogg2 wrote: »
    lightman1 wrote: »
    To reiterate...
    My amp is not in your house?

    No it is holding up the lawn tractors axle off the ground.... outside

    Naaah -- that's what the MC-2100 is for.

    Actually, that's a joke. The MC-2100 makes a much better doorstop.
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • tonybtonyb Posts: 29,040
    Judging by the extreme glow of that thing, I'd say....the wick is lit. Delayed fuse maybe ? Kinda like when we were kids and made that wick on the M-80's/quarter sticks long enough to buy us some time to get the heck out of the way.

    What's the warranty on this thing....36 hours ? :)
    HT SYSTEM-
    Pioneer elite vhx 21
    Sony 4k BRP
    Tad 803 bookies
    Polk 500 surrounds
    Polk s35 center
    SVS SB-2000
    Sonos

    Music-

    Joule la-100 pre
    B&k 1403 amp
    Cary xciter dac
    Cullen modded Sonos
    ERA D5 bookies

    Cables-
    Acoustic zen Satori speaker cables
    Analysis plus crystal oval ic's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable
  • verbverb Posts: 2,559
    I’m happy so far so good. Perhaps number 4 is the charm! :smile:
    2CH: Polk SDA 1C's, Micro Seiki MB14 TT, Rotel 1580 Pre, Marantz CD6006 CDP, Carver TX8 Tuner, Conrad Johnson MF2300A Amp, Furman 15PFi Power Conditioner, AQ Diamondback (version 1) RCA IC's, MIT Terminator2 Cables
    Office: PC, Marantz AMP-1, Acoustic Technologies Classic Speakers, Polk PSWi225 wireless sub, MIT AVt2 cables, IFI Purifier2, AQ Cinnamon USB cable
  • mhardy6647mhardy6647 Posts: 17,623
    edited June 13
    verb wrote: »
    I’m happy so far so good. Perhaps number 4 is the charm! :smile:

    That's what I am thinking.

    In fact, early results suggest that this gizmo, as is, represents a great 99-dolla desktop/nearfield amplifier, except:
    1. It's rather large compared to most other such devices.
    2. It generates a fairly large amount of heat - mostly from those EL84s - relative to most other such devices.

    I wonder if I can figure out how to do something with the Bluetooth on it? I am pretty... shall we say... low tech. ...or is it old school?


    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • ClipdatClipdat Posts: 3,461
    edited June 13
    It's actually $120 plus shipping. Not sure where this $99 figure is coming from.

    https://www.monoprice.com/product?p_id=13194
    Got Dayens?
  • mhardy6647mhardy6647 Posts: 17,623
    It was $99 at least at one point -- and the same amp with other brand names is or was available for $99, last time I looked.

    If the OP paid more than $99 for it, I do apologize! :blush:
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • mhardy6647mhardy6647 Posts: 17,623
    As a postscript -- I will give this amp a serious audition at some point in the not too distant future.

    If we really do get rain later today (it's in the forecast), maybe even tonight! :)
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • Viking64Viking64 Posts: 2,531
    $139.99, $120, $119.99, $99? Why does something from MONOPRICE have so many prices? :p
  • mlistens03mlistens03 Posts: 986
    Viking64 wrote: »
    $139.99, $120, $119.99, $99? Why does something from MONOPRICE have so many prices? :p

    HAHA!

    So you like it for $99? What if it was $99.99? Would it still be good for the money? :wink:
    2 channel
    Speakers: Mission 770 Freedoms
    Integrated amp: Technics SU-v75 and matching tuner
    CDP: Technics SL-PC20
    Cables: Monoprice, Monster, Acoustic Research, and a few generic ones
    TT: Technics SL-3200, direct drive
    Cartridge: Shure M97xE

    Pc gaming setup
    Receiver/amp: Yamaha RX-V665
    Computer: Lenovo g50 (soon to be upgraded to a Dell Precision 690 which is far from stock!!)
    Interconnects: Amazon basics HDMI, Acoustic Research HDMI, Monoprice speaker cables
    Speakers: Boston Acoustics CR75s

    Random equipment on standby:
    Onkyo TX-v940, JBL woofers and tweeters, single Klipsch KG .5, Yamaha guitar amplifier, Peavey Rage 158 guitar amplifier, Kicker comp 12” subwoofer, single Bose 802 series II, a whole bunch of 1”-3” full range drivers, Infinity Crescendo 3007s (on sale), Polk LSi25s
    txcoastal1 wrote: »

    You don't tell her you read the manual, and you tell her you know what the problem is, and you fixed it, because that what men do, fix things
    sure it has a flat response, and sure it has a lot of detail, and yes, it has good and clear lows. But is it enjoyable to listen to? Does it make you grin ear to ear? That’s what really matters.
    Seen somewhere on AudioKarma (I think)
  • mhardy6647mhardy6647 Posts: 17,623
    Viking64 wrote: »
    $139.99, $120, $119.99, $99? Why does something from MONOPRICE have so many prices? :p

    That's a good question.
    One of those Imponderables, I guess.

    Either that, or the company should be renamed Oligoprice. Or maybe Oligoprices, to kind of maintain some consistency of pluralism.

    :|
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • ClipdatClipdat Posts: 3,461
    Just doesn't have the same ring to it.
    mhardy6647 wrote: »
    Either that, or the company should be renamed Oligoprice. Or maybe Oligoprices, to kind of maintain some consistency of pluralism.

    :|

    Got Dayens?
  • Viking64Viking64 Posts: 2,531
    How about "Mongoprice"? :p

    79wtoynumfw7.jpg
  • mhardy6647mhardy6647 Posts: 17,623
    well, still not much clarity vis-a-vis the 6N1. Kevin Kennedy, who's something of a Russky-tube-o-phile (and a talented designer & builder) said it's just a lower-quality Chinese variant of the 6N1P. The 6N1P itself essentially is a 6922, although it requires twice the heater current.

    For fun, I dissected one of those goofy tube cages on the "Monoprice" amp, extricated a 6N1 (labeled on the tube as "6N1-J") and tested it as a 6DJ8 (6922). Both sections tested good.

    Doesn't really prove anything, especially since I used an emissions-type tester... but the result is at least not inconsistent with the notion that it's essentially a 6922 workalike

    FWIW: Datasheet for the 6N1 (in Chinese, but not the numbers, units, or curves) at:
    https://frank.pocnet.net/sheets/095/6/6N1.pdf


    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • BMF35BMF35 Posts: 3
    DaveHo wrote: »
    BMF35 wrote: »
    35

    Really, Mr. 1 post. Better luck next time.

    I must have missed the requirement that only members with more than 1 post could participate. Sorry about that Mr. Ho.
  • msgmsg Posts: 4,037
    mhardy6647 wrote: »
    I wonder if I can figure out how to do something with the Bluetooth on it? I am pretty... shall we say... low tech. ...or is it old school?
    Doc, when I was first getting set up, I picked up a couple of those Bluetooth receivers. Most seem to offer optical and 3.5mm/RCA out. They worked pretty well for the connectivity, and sounded pretty good for streaming music from a smartphone or tablet, so if you're just looking to play de myooziks and not necessarily critical listening, might be worth a shot. I used the Iogear TuneTap, but Oligoprice(s) probably has something less commit-ty. Also might offer the extra spark you need to get this fire started, since Johnny 4 seems to have fizzled (or is a sleeper).
  • msgmsg Posts: 4,037
    Viking64 wrote: »
    How about "Mongoprice"?
    Sole employee leisurely travels around the country punching out those horses that lost in the Derby.
  • mlistens03mlistens03 Posts: 986
    BMF35 wrote: »
    DaveHo wrote: »
    BMF35 wrote: »
    35

    Really, Mr. 1 post. Better luck next time.

    I must have missed the requirement that only members with more than 1 post could participate. Sorry about that Mr. Ho.

    That was a requirement, but the real issue was that the karma had already been over for a while, and the amp was being shipped out. You were late to the party.
    2 channel
    Speakers: Mission 770 Freedoms
    Integrated amp: Technics SU-v75 and matching tuner
    CDP: Technics SL-PC20
    Cables: Monoprice, Monster, Acoustic Research, and a few generic ones
    TT: Technics SL-3200, direct drive
    Cartridge: Shure M97xE

    Pc gaming setup
    Receiver/amp: Yamaha RX-V665
    Computer: Lenovo g50 (soon to be upgraded to a Dell Precision 690 which is far from stock!!)
    Interconnects: Amazon basics HDMI, Acoustic Research HDMI, Monoprice speaker cables
    Speakers: Boston Acoustics CR75s

    Random equipment on standby:
    Onkyo TX-v940, JBL woofers and tweeters, single Klipsch KG .5, Yamaha guitar amplifier, Peavey Rage 158 guitar amplifier, Kicker comp 12” subwoofer, single Bose 802 series II, a whole bunch of 1”-3” full range drivers, Infinity Crescendo 3007s (on sale), Polk LSi25s
    txcoastal1 wrote: »

    You don't tell her you read the manual, and you tell her you know what the problem is, and you fixed it, because that what men do, fix things
    sure it has a flat response, and sure it has a lot of detail, and yes, it has good and clear lows. But is it enjoyable to listen to? Does it make you grin ear to ear? That’s what really matters.
    Seen somewhere on AudioKarma (I think)
  • mhardy6647mhardy6647 Posts: 17,623
    edited June 14
    So -- according to the aforementioned Kevin Kennedy, the 6p15 power pentode is equivalent to the 'western' EL86/6CW5.

    As an aside: the Russian power pentodes just confuse me. It appears that the "Svetlana" branded "SV83" of the 1990s (and used in Steve Deckert's SE-84 "Zen" amplifier) was a relabled 6p15-ev :p The "ev" postscript refers, I believe, to ruggedized, "military-grade" variants of a tube type.

    At any rate -- I looked up the 6CW5 and it's a cool tube. It was a fairly late vacuum tube development for series-string TVs but also for hifi. It is EL84-esque, but rated for lower plate voltage. It requires a gob of filament current, too (0.76 A @ 6.3 VAC). NOS 6CW5s are cheap!

    datasheet: http://www.mif.pg.gda.pl/homepages/frank/sheets/093/6/6CW5.pdf
    http://tubelab.com/designs/tubelab-spp/applications/

    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • msgmsg Posts: 4,037
    Haha, nevermind this, Doc, I didn't realize that unit already has Bluetooth, dehr. Thought it was just a standard tube integrated.
    msg wrote: »
    mhardy6647 wrote: »
    I wonder if I can figure out how to do something with the Bluetooth on it?
    Doc, when I was first getting set up, I picked up a couple of those Bluetooth receivers
    ...
  • mhardy6647mhardy6647 Posts: 17,623
    There is nothing standard about this little beastie ;)

    So -- today I gritted my teeth and hooked it up to the Frankenaltecs.

    With really simple, really well recorded music -- it's not bad. A little bright, and without the depth of SE 2A3 on these loudspeakers -- but not bad.

    As soon as the music got a little complicated, it started to get two-dimensional and hard/glassy sounding. And very bright.

    Now, in fairness, the Frankenaltecs are adjusted for the "Simple 2A3" amp's behavior - - and that amp is doubtless rolled off in the treble... but the pairing of the Monoprice and the Frankenaltecs really isn't a propitious one. It wasn't awful, or even embarrassing -- but it wasn't compelling, either. The nominal 16 ohm load the Frankenaltecs presents might have played a role, too.

    I will try some other decent quality speakers on the MP amp anon -- meanwhile, I'm
    listening to Patty Larkin's 25 on the Frankenaltecs via SE 2A3 and lovin' what I hear.

    42804946501_83768e04cb_b.jpgDSC_1501 (2) by Mark Hardy, on Flickr

    40994464340_3cdd728ccc_b.jpgDSC_1506 (2) by Mark Hardy, on Flickr

    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • msgmsg Posts: 4,037
    Is the SE 2A3 your flea power tube amp?
  • mhardy6647mhardy6647 Posts: 17,623
    edited June 14
    Well, semi-fleapower @ 3.5 watts per channel. Good for loudspeakers with ca. 100 dB per watt at 1 meter sensitivity.

    The flea-power-diest amp here would be the Decware Zen SE-84B, which runs EL84 or 6p15-ev ("SV83") output tubes in triode mode for about, maybe :p 1.5 watts per channel or so. Nice sounding amplifier, but it could get congested playing little girl with guitar music on the Cornwalls at what I'd consider moderate volume in a moderate sized room (our MA living room).
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • pitdogg2pitdogg2 Posts: 9,804
    Boy hockey pucks sure come handy ;)
  • mhardy6647mhardy6647 Posts: 17,623
    I am a big fan.
    I bought myself a box of 'em last winter on Amazon.
    "It's like watching a roomful of people who couldn't get through college algebra discussing the flaws of quantum physics theory. I guess it could be fun, but it's ultimately a waste of time." -- seen on audiokarma

    "Some amps run on self bias, some amps run on fixed bias. But his amps run on confirmation bias." -- seen on audioasylum

    "Writing about hifi is like dancing about architecture" -- paraphrasing some wag (possibly Frank Zappa)
  • msgmsg Posts: 4,037
    I didn't know you could get em on Amazon. I bought a few bags of 'em at Dicks a while back. They do come in handy. I use those and also those EVA anti-vibe pads from SupplyHouse. Also great for elevating the rear of a notebook for better cooling.

    More handy stuff - a roll of Sorbothane, various 3M sticky feet and bumpons, neoprene foam roll, and high density monitor isolation pads (I like the Sound Addicted ones for value/performance/quality; one of my favorite mods for desktop computer system)
  • ClipdatClipdat Posts: 3,461
    edited June 15
    Duh! It's not broken in yet! Give it another 50-100 hours and it'll improve! :wink:
    mhardy6647 wrote: »
    With really simple, really well recorded music -- it's not bad. A little bright, and without the depth of SE 2A3 on these loudspeakers -- but not bad.

    As soon as the music got a little complicated, it started to get two-dimensional and hard/glassy sounding. And very bright.

    Got Dayens?
  • DaveHoDaveHo Posts: 1,809
    Clipdat wrote: »
    Duh! It's not broken in yet! Give it another 50-100 hours and it'll improve! :wink:
    mhardy6647 wrote: »
    With really simple, really well recorded music -- it's not bad. A little bright, and without the depth of SE 2A3 on these loudspeakers -- but not bad.

    As soon as the music got a little complicated, it started to get two-dimensional and hard/glassy sounding. And very bright.

    If it lasts that long. :/
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