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  1. #1
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    Question Pass Labs INT-250 Question

    I've been reading online reviews for the Pass Labs INT-250 and while there are a myriad of excellent comments on regarding power, control, musicality, and tonality, the one thing that also seems common between them is the fact that this integrated runs HOT. Like 122 deg F/50 deg C hot. Since I know I've seen several people reference the INT-250 in other threads on this site, I thought that those with real-world experience with the INT-250 might share their thoughts on the heat issue.

    Thanks in advance!
    Pass Labs XP-10, Pass Labs X250.8, OPPO UDP-205, Auralic Aries G1, Bryston BDA-3, Janszen zA1.1, SVS SB13-Ultra, Audioquest cabling, Panamax power conditioner

  2. #2
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    Re: Pass Labs INT-250 Question

    Before I purchased my Pass system I had the same concern. I own Pass X260.8s. They are warm, not hot. The INTs do get warm.

    I live in Fl. If they were hot, I wouldn't own them. When you get into the Pass upper end XA and XS models - those get hot.

    Pass amps are absolutely amazing. The give you a tube like sound with solid state reliability.
    Sincerely,


    Joe

    “Not everything that can be counted counts, and not everything that counts can be counted." – William Bruce Cameron

    Amps: Pass X260.8s *** Pre-Amp: Pass XP22 *** Headphone Amp: Pass HPA-1 *** Speakers: Magico A3’s *** Magico A3 Grills *** Headphones: Focal Utopia *** Digital: Luxman D-08u SACD *** Aurender ACS10 CD Ripper & N100 Streamer *** Power: Shunyata Hydra Alpha A12 Power Conditioner *** AQ NRG Edison 20 *** Cables: Shunyata *** Rack: Bamboo SVT Quadrasphire *** Accessories: Herbie's Audio Lab Giant Titanium Cone Decoupling Gliders *** Russ Andrews Cable Elevators

  3. #3
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    Re: Pass Labs INT-250 Question

    Well, with a fairly large amount of initial Class A bias it is going to run quite warm. I too have a pair of X260.8's and while they do run warm they never get 'hot to the touch'
    Cheers ! …. Dave

  4. #4
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    Re: Pass Labs INT-250 Question

    My little xa30.5 gets rather toasty. Even the manual notes, "you can expect 50 to 55 degrees C. temperatures on the heat sinks". Yep lots of ventilation.
    Chris

    (2 Chl): Pass xa30.5, W4S STP-SE Lumin D1, VPI Classic 1, Manley Chinook, Dynavector DV20x2L.exaSound e32 mk11, Marantz SA11S2. ( computer) Win7, Synology DS413 NAS ,Vincent SP-331MKII , Quicksilver LS,Vapor Audio Breeze, Rythmik F12se. Cables: Acoustic Zen, DL Labs, Blue Jean.. ,Bryston BCD-1,Timbernation Rack,

  5. #5

    Re: Pass Labs INT-250 Question

    I've had an INT250 for three years. The top gets warm, the sinks get very warm. I don't know what the temperatures are. I can keep my hand on either, but probably couldn't keep my tongue on the sinks for very long, if that helps. Great sound, regardless.

  6. #6
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    Re: Pass Labs INT-250 Question

    I have an X250 amp and it gets up to about 115-120F. My BAT preamp gets hotter with 8 tubes.
    My Gear- Mains System-Pass X250 amp, BAT VK-51se preamp, Luxman DA-06 DAC, Magnepan 1.6's, Thorens TD-145 TT, Dual Martin Logan Subs, Vintage Luxman T-110 Tuner, Other systems- Parasound A21 amp,Van Alstine Ultra Plus Hybrid tube DAC and Preamp, Magnepan MMG's, Monitor Audio S1's, PSB B6's, Def Tech Pro Monitor 1000's, Velodyne sub, Adcom GFR-700 AVR, Music Hall 25.2 modified CDP, Cables by Cardas Parsec, AQ Columbia DBS 72v, Wire World.

  7. #7
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    Re: Pass Labs INT-250 Question

    At "rest", my INT60 is uncomfortable to touch for more than a few seconds; not "burning hot", though
    Rob
    __________________________

    Modwright Oppo 205 full tube mod
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    REL S3
    Daedalus/Wywires and Acoustic Zen cables
    Torus IS5

  8. #8
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    Re: Pass Labs INT-250 Question

    Thanks to everyone for your responses. In the end, I decided to skip the INT-250, hold on to my XP-10, and upgrade my current amp to the X250.8. Should arrive early next week. I'm very excited!
    Pass Labs XP-10, Pass Labs X250.8, OPPO UDP-205, Auralic Aries G1, Bryston BDA-3, Janszen zA1.1, SVS SB13-Ultra, Audioquest cabling, Panamax power conditioner

  9. #9
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    Re: Pass Labs INT-250 Question

    Congrats! Nice choice. Although, I think you would have been very happy with the INT-250 as well.
    _______________

    Mike

  10. #10
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    Re: Pass Labs INT-250 Question

    I agree that the INT-250 is a great choice! My thinking behind going with the X250.8 instead of the INT-250 is that at some point, I can also upgrade my XP-10 to an XP-22.
    Pass Labs XP-10, Pass Labs X250.8, OPPO UDP-205, Auralic Aries G1, Bryston BDA-3, Janszen zA1.1, SVS SB13-Ultra, Audioquest cabling, Panamax power conditioner

  11. #11
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    Re: Pass Labs INT-250 Question

    I had the XP-22 in my system for several weeks. I was very impressed with it; very transparent, good soundstage, well made. A very compelling product at its price point.
    _______________

    Mike

  12. #12
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    Re: Pass Labs INT-250 Question

    I've been super impressed with my XP-10 so far. I can only imagine the benefits the XP-22 will bring.

    I'm thinking the X250.8 is this year's discretionary stereo budget in its entirety and the XP-22 will be next year's.
    Pass Labs XP-10, Pass Labs X250.8, OPPO UDP-205, Auralic Aries G1, Bryston BDA-3, Janszen zA1.1, SVS SB13-Ultra, Audioquest cabling, Panamax power conditioner

  13. #13
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    Re: Pass Labs INT-250 Question

    The heat issue with the Pass INT 250 is waaaaayyyyyyy overstated on the forums. As a poster mentioned above, they operate warm, not hot by any stretch of the imagination. You can lay your hand on a fully warmed up INT 250 all day long and not be uncomfortable at all...except for standing there all day. But seriously, I'm not sure where this myth got started. And as far as warming up a room, I leave my INT 250 and dual MSB Discrete power supplies on 24/7 and it doesn't noticeably warm my 12' x 27' listening room. If it does, I sure don't notice it.

    I've read that it might be more of an issue in the hotter climates but I seriously doubt it. I live in southern Iowa and the outside air temp yesterday was 93 degrees with about 80% relative humidity. With our humidity it can feel just as hot here as Arizona or Florida. Florida and Iowa have comparable humidity and temps except Florida will have a few more days in the mid to upper '90s in the summer months. Arizona temps are higher than Iowa's and regularly get above the century mark, except they don't have anything close to the humidity levels that Iowa has. It didn't feel any warmer in my listening room yesterday than it usually does. It might raise the ambient temp a degree or two in a smaller listening area but heat should NOT be deal breaker with the INT 250. A smaller room...maybe. But not by much.
    Amplifier: Pass Labs INT 250 integrated.

    DAC/Streamer: MSB Discrete Dual Power Supply.

    Server: Roon Nucleus with lifetime subscription.

    Speakers: Harbeth Super HL 5+ 40th Anniversary
    Model.

    Cables: AudioQuest Rocket 88 speaker cables,
    Mackenzie interconnects.

    Speaker Stands: HiFi Man.

  14. #14
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    Re: Pass Labs INT-250 Question

    Wanted to follow up on my own post. I received my X250.8 on Tuesday, let it sit 24 hours (damn quarantine!), got it positioned into my system last night ...

    0611201510b.jpg

    It's been on and playing music for the last 18 hours (mostly softly, but there was an hour last night and an hour today where I was listening more loudly) and generally I would agree with most. The amp runs hotter towards the rear. The front half of the amp (top and sides) is warm, but not too warm. Towards the rear, it does get hotter -- uncomfortable to hold your hand on it for longer than 2-3 seconds, but nowhere near what I would call HOT. I can feel the heat emanating from about 2-3" away, but certainly not from my listening position. The air conditioning doesn't seem to be cycling on more than normal (and it was in the 90s yesterday). Looking forward to seeing how a solid week of break-in will improve the sound.

    BTW, the amp isn't sitting directly on my carpet. I ordered an amp stand and the wooden shelf is detachable from the metal frame -- that is what the amp is sitting on. Plan on having a friend stop over soon so he and I can lift the sucker onto the assembled amp stand.
    Pass Labs XP-10, Pass Labs X250.8, OPPO UDP-205, Auralic Aries G1, Bryston BDA-3, Janszen zA1.1, SVS SB13-Ultra, Audioquest cabling, Panamax power conditioner

  15. #15
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    Re: Pass Labs INT-250 Question

    Quote Originally Posted by tino27 View Post
    Wanted to follow up on my own post. I received my X250.8 on Tuesday, let it sit 24 hours (damn quarantine!), got it positioned into my system last night ...

    0611201510b.jpg

    It's been on and playing music for the last 18 hours (mostly softly, but there was an hour last night and an hour today where I was listening more loudly) and generally I would agree with most. The amp runs hotter towards the rear. The front half of the amp (top and sides) is warm, but not too warm. Towards the rear, it does get hotter -- uncomfortable to hold your hand on it for longer than 2-3 seconds, but nowhere near what I would call HOT. I can feel the heat emanating from about 2-3" away, but certainly not from my listening position. The air conditioning doesn't seem to be cycling on more than normal (and it was in the 90s yesterday). Looking forward to seeing how a solid week of break-in will improve the sound.

    BTW, the amp isn't sitting directly on my carpet. I ordered an amp stand and the wooden shelf is detachable from the metal frame -- that is what the amp is sitting on. Plan on having a friend stop over soon so he and I can lift the sucker onto the assembled amp stand.
    Congrats. That's a very nice setup.
    Sincerely,


    Joe

    “Not everything that can be counted counts, and not everything that counts can be counted." – William Bruce Cameron

    Amps: Pass X260.8s *** Pre-Amp: Pass XP22 *** Headphone Amp: Pass HPA-1 *** Speakers: Magico A3’s *** Magico A3 Grills *** Headphones: Focal Utopia *** Digital: Luxman D-08u SACD *** Aurender ACS10 CD Ripper & N100 Streamer *** Power: Shunyata Hydra Alpha A12 Power Conditioner *** AQ NRG Edison 20 *** Cables: Shunyata *** Rack: Bamboo SVT Quadrasphire *** Accessories: Herbie's Audio Lab Giant Titanium Cone Decoupling Gliders *** Russ Andrews Cable Elevators

  16. #16
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    Re: Pass Labs INT-250 Question

    I like your setup also. But what’s up with the Christmas tree? It’s June 11. ��
    Gary
    Accuphase E-650; Lumin A1; Tannoy Canterbury GR

  17. #17
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    Re: Pass Labs INT-250 Question

    Thanks for the compliments! As for the tree, I'm not late taking it down, I'm early putting it up.
    Pass Labs XP-10, Pass Labs X250.8, OPPO UDP-205, Auralic Aries G1, Bryston BDA-3, Janszen zA1.1, SVS SB13-Ultra, Audioquest cabling, Panamax power conditioner

  18. #18
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    Re: Pass Labs INT-250 Question

    The Christmas tree stays. I love it!
    Wharfedale Linton w/ stands, Avantgarde Duo XD, Klipsch RB-75, Klipsch RP-160M.

    Luxman 590AX Mark II, Job INTegrated.

    Conrad Johnson GAT2, Wyred 4 Sound STP-SE Stage 2, Misho Myronov Wooden pre.

    Misho Myronov Wooden amp, First Watt SIT-3 (x 2 - one as backup), First Watt F7, Job 250 Monos, Valvet E2se, NuForce STA200, AkitikA GT-102 amp, ASL Wave monos, Dennis Had 45 monos. Absolute Audio Labs PCF 25 amp (improved First Watt F7 super clone)

    RME Audio ADI-2 DAC FS, Lumin U1 mini, ModWright Ultimate Sony XA-5400ES, Audio Mirror Tubadour III NOS R2R Tube Dac w/ SE upgrades.

    Burmester 948, McIntosh MCLK12, Kimber Kable, Siltech, Cardas, Avanti Audio cables.

  19. #19
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    Re: Pass Labs INT-250 Question

    Congrats! And, don’t worry about the amp getting a little warm; not a big deal! Enjoy the music!
    _______________

    Mike

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