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  1. #1

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    Default Older Amps - ON or OFF?

    I just picked up an integrated and 5 channel Parasound (due my previous 3 channel went bad).
    Both the integrated and 5 channel amps around 20 years old. I know this topic was kicked around quite extensively a few years ago hear, but I figured it was worth re-visiting.

    What will keep these amps lasting longer (ie before something goes bad with them) - turned ON all the time, or turn OFF when not in use. Lastly, electricity use is not really my main concern. Thanks.....

  2. #2

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    I don't think this is trivial to answer definitively... I'll offer my opinion; all things being equal, most of the stress on a piece of electronic equipment is the power surge at turn on. Note that incandescent light bulbs usually fail when you switch 'em on, not when burning at steady-state :-)

    The other enemy of electronic components, though, is heat - and at steady state, there is going to be more heat in an idling component than one that's turned off.

    I still think that the turn-on transient is the more damaging of these two "degradation" scenarios :-)

    It is also worth noting that the amps probably do have some transient suppression gizmos in circuit to abrogate the impact of the turn-on inrush (what a rush, man...).
    all the best,
    mrh

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    Bump on this topic because I'd like to hear what others think.

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    I leave my Adcom 5400 powered on 24/7... I only shut everything down when I'm going to be away from home for an event longer than just a day of work.

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    Quote Originally Posted by Drenis View Post
    I leave my Adcom 5400 powered on 24/7... I only shut everything down when I'm going to be away from home for an event longer than just a day of work.
    ^ This is how I treat my older solid state gear. I power down my tube amp if I'm going to be away from it for a couple of hours or more. There's no point in losing tube life and wasting all that power and heat from a Class A amp.
    2.1: Peachtree DAC●iT>Yaqin MC-10L w/6CA7-EH, Voskhod 6N1P-EV>polkaudio RT25i, PSW202

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  6. #6

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    I tried keeping mine off but found that it didn't put out any sound.
    _______________________________________
    TV: 52" LED Sharp Aquos Quattron
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    Onkyo TX-NR818 --- Emotiva XPA-3 --- Oppo BDP-103

  7. #7

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    Quote Originally Posted by ROHfan View Post
    I tried keeping mine off but found that it didn't put out any sound.
    You just need a more sensitive pair of loudspeakers.
    all the best,
    mrh

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    Quote Originally Posted by mhardy6647 View Post
    You just need a more sensitive pair of loudspeakers.
    Oh, you mean like Bose? ;)
    _______________________________________
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    Fronts: Martin Logan Electromotions --- Center: Martin Logan Motion 8
    Front Heights: Polk RC65i --- Rears: Polk RC85i --- Sub: BIC America F12
    Tactile Transducers: Aura Pro Bass Shakers powered by Pyle Pro 2x15 Amplifier
    Onkyo TX-NR818 --- Emotiva XPA-3 --- Oppo BDP-103

  9. #9

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    K-horns.
    all the best,
    mrh

  10. #10

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    My Parasound stays on 24/7.

  11. #11

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    I used to leave my old Adcom 24/7 without ever having an issue.
    Theater Room: Pioneer Elite SC-35, RTi12's, Csi5, Fxi5's, Fxi3's, ED A5-350 sub, Optoma HD20, 92'' Elite Screen, Sony BDPS790, Xbox One, APC H15, MIT Exp 2 SC's, Pepster PC's

    Living Room: Martin Logan ESL's, Peachtree Audio iNova, Zu Mission SC's & IC's, Pepster PC, Sharp Aquos 60'', AEX

    Bedroom: Panasonic AX200U projector, 110" screen

    Outdoor: Polk Atrium 5's, Yamaha Rxv371

  12. #12
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    I would leave them on unless they are overly warm when at operating temperature. What do they temp after they've been on for an hour?

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    I turn mine off. But i do turn them on for a while before i listen. Hell i don't even leave mine plugged in unless I'm going to listen.

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    Quote Originally Posted by zingo View Post
    I would leave them on unless they are overly warm when at operating temperature. What do they temp after they've been on for an hour?
    Neither the Parsound or Onkyo are really that warm at all. I was leaning toward leaving them on due the "Dad there is no sound on the TV....." factor alone.

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    Almost no good power amps put out much heat when idling. I've had my Adcom on for days, no problem. Heck, it never even gets warm when driving the Lsi-7s. Same with the NAD below.

    But, yeah, don't "do" this with tube amps--things can happen, and "you" might want to be around for "that", just in case!

    cnh
    Onkyo TX-SR 805 System #1 HT AVR
    Office Two Channel: LSi-7s (Nakamichi CA-5, NAD 214, Pioneer BDP51fd)
    Vintage Polks: Polk Monitor 5As, Monitor 7Bs [HK 730], Monitor 10As [Marantz 2265], SDA-2Bs [Jolida JD-303, Jolida MV-MK4]
    Headphones: HD600, Q701, ATH-M50s etc. Bravo Audio Ocean amp., Onkyo P-304, Adcom GFA-555, Technics Direct Drive TT

  16. #16

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    my adcom 555 stays on for most of the weekend...dared tube pre, on only when i listen

  17. #17

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    Quote Originally Posted by cnh View Post
    ...Almost no good power amps put out much heat when idling...

    .. tell that to my BAT! I'd like to take a temperature measurement at idle. You can't leave your hand on it very long...
    2-Channel:

    Source 1: PC
    Source 2: Rega Apollo CDP
    USB > SPDIF Converter: Stello U3
    DAC: Audio GD NFB-7
    Preamp: Audio Research LS-15
    Power Amp: BAT VK-500
    Speakers: Magnepan 3.7's

    HT:

    Source 1: HTPC
    Source 2: Oppo 103
    Pre/Pro: Marantz av8003
    Power Amp: Rotel RMB-1095
    Fronts: LSiM-705's
    Center: LSiM-704c
    Surrounds: LSiM-702's
    Subs: Dual SVS PC12-NSD's

  18. #18

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    Quote Originally Posted by cnh View Post
    Almost no good power amps put out much heat when idling. I've had my Adcom on for days, no problem. Heck, it never even gets warm when driving the Lsi-7s. Same with the NAD below.

    But, yeah, don't "do" this with tube amps--things can happen, and "you" might want to be around for "that", just in case!

    cnh
    well - good Class A power amps put out essentially as much heat at idle as they do at full output power;
    actually, so would bad Class A amps :-)
    Your statement would onl apply to class AB amplifiers (or them digital amp thingies).
    Last edited by mhardy6647; 03-08-2013 at 01:21 PM.
    all the best,
    mrh

  19. #19

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    I pretty much leave all my gear on all the time. Can't say if it's better or worse...but definitely easier
    2-channel
    Sources: Pro-ject 2.9 wood Grado Gold cartridge; Squeezebox Duet; Oppo BDP-83
    Amps: PS Audio GCPH; PS Audio DLIII(Cullen mods IV); Parasound Halo P3; B & K Reference 200.2
    Speakers: Polk - LSi15's(db sub mod)


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    Amps: Sony - STR-DG1000; Outlaw 200 Mono; Speakers: Polk - CS2, Monitor 70's, RC80i's; Video: Optoma HD20; FAVI HD-100


    Man Cave (In Progress)
    Sources: Sony PS-LX410, Denon 3910; Amps: Dared sl2000a, HK 3490, Simaudio Moon LP3; Speakers: Polk - SDA 2A's

  20. #20

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    On Thursday night I turn on all my two channel, and HT, gear, and leave it on until Sunday night. I have found that both systems sound better after the gear has run 24 hours, and the TV looks better after a day. The rest of the week I turn it on when I get home, and off at bed time. The two channel system especially wastes so much electricity at idle, and the prolonged heat cannot be a good thing.

  21. #21

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    Been turning my amps off for 37 years after every use---haven't had an adverse affect yet. I've owned my parasound now for over 9 years, it gets shut off everytime as well.

    Source: Squeezebox Touch/CIA Power Supply
    DAC: Benchmark DAC/PRE
    Linestage: Placette RVC Passive
    Power Amp: Parasound HCA-1500A
    Speakers: Harbeth Compact 7ES-3 Monitor
    Subwoofer: SVS PB12-NSD

  22. #22

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    I turn my gear off as well. They are in standby mode though, so in a sense they are still "on".
    "My wife likes my rig......HAHAHAHAHAHAHAHAH!"


    B&W CDM 1NT; B&W CDM CNT; Infinity us 1; Velodyne DEQ-8 x2; Pio Elite VSX-23; Sony SCD-CE595 SACD, Denon DP11-F TT[/COLOR]

  23. #23

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    I use a Integra 2.1 amp in my 2ch setup and it has a standby mode when no signal is detected for 30sec and comes back on when a signal is sent back through. It works great for me as the amp sits behind a piano out of reach, unless I pull the piano out from the wall.
    Family Room HT 7.1:
    Pioneer Elite VSX 32 Pioneer Elite BDP 95FD Pioneer Elite DV 47Ai Pioneer Elite MD53 SlimDevice Transporter Panamax M5300-EX
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    Upstaris media room:
    Pioneer VSX D510 Sony PS3 Squeezebox Classic 3 Polkaudio speakers Monitor 40 II fronts CSR Center
    Master bedroom:
    Pioneer VSX 520k Pioneer BDP 330 Squeezebox Classic 3 Optimus LX5 fronts & Rears Optimus CS3 center Acoustic Audio sub

  24. #24

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    I always power down in sequence all of the equipment after using it , then unplug it from the wall. Around here, the power has a tendency to go off and on a number of times during the year. Most of my power amps are 20 to 30 years old.

  25. #25

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    I spent a lifetime working for the FAA and everything stayed on all the time, no exceptions. If we has a power outage which was unusual the power up was always frightening. With that said, on 3 of my systems I use a Belkin pf30 which seems to turn everything on and off in sequence which I like. Another thing my in-laws had a house fire caused by one of the first "instant-on" tv's. So to sum it up: I know better but I turn the stuff off.
    Main Family Room: Sony 46 LCD, Sony Blue Ray, Sony DVD/VCR combo,Onkyo TXNR 708, Parasound 5250,
    Polk SDS-SRS with mods, CSI 5 center + Klipsch SC2, Polk RT2000P rears, Klipsch KG 1.5's sides, Polk Micro Pro 1000, Polk Micro Pro 2000, Polk SW505, Belkin PF60, Signal Cable Classics,Monster IC's, 2 15 amp circuits & 1 20 amp circuit.

    Living Room: Belkin PF60, Parasound HCA2200, MIT ProlineEXP balanced IC's,Emotiva XDA-1 DAC/Pre,Emotiva ERC2 transport,MIT AVT2, Polk LSI 9's.

  26. #26

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    I just fired up both Adcoms and will shut them down sunday night, instead of turning them on and off when I want to listen to one or the other, as I listen to these the mostly on the weekends and usualy wait a half hour after they have been on to listen, as this is recomended by some of you. neither one gets hot anyways barley warm for that matter even after hours of pushing them. I dont think I would leave any of my stuff on 24/7, I also unplug stuff when not using, as the storms around hear can get pretty intense.

  27. #27

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    I turn my stuff OFF, if only to avoid the chance of burning my house down. How important is a longer lasting amp........ compared to a building to house it in ?

  28. #28

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    Quote Originally Posted by mhardy6647 View Post
    well - good Class A power amps put out essentially as much heat at idle as they do at full output power;
    actually, so would bad Class A amps :-)
    Your statement would onl apply to class AB amplifiers (or them digital amp thingies).
    OK, you guys got me. Class A was NOT something I was thinking about, since they are usually "prohibitively" expensive and I highly DOUBT the OP was referring to anything other than AB amps. But you'd think as an academic, "I" would REMEMBER to QUALIFY EVERYTHING I say so that this kind of thing does NOT happen. lol

    OH WAIT! I did "QUALIFY what I said!"

    "Almost no good power amps put out much heat when idling"

    I suppose there is still too much of the old working class boy in my past who likes to chew the fat with the guys without having to ALWAYS remember that he "also" has advanced degrees and regularly discourses with the guys who argue about pinheads and angels! lol

    Then again, it was said of Morris Cohen (the great logical positivist and philosopher of linguistic analysis [what a dead end that was!]) that he had a great memory until his "stroke". After that he was no longer able to harass Paul Tillich who had no real problem responding to him, in any case!

    Carry on!

    cnh
    Last edited by cnh; 03-09-2013 at 02:47 PM.
    Onkyo TX-SR 805 System #1 HT AVR
    Office Two Channel: LSi-7s (Nakamichi CA-5, NAD 214, Pioneer BDP51fd)
    Vintage Polks: Polk Monitor 5As, Monitor 7Bs [HK 730], Monitor 10As [Marantz 2265], SDA-2Bs [Jolida JD-303, Jolida MV-MK4]
    Headphones: HD600, Q701, ATH-M50s etc. Bravo Audio Ocean amp., Onkyo P-304, Adcom GFA-555, Technics Direct Drive TT

  29. #29

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    you and I both suffer the curse of being over-educated, cnh ;-P
    all the best,
    mrh

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    Yeah. Well.

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