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hafler dh-200

  1. F

    Hafler DH-200 - Input jack replacement

    I recently picked up a Hafler DH-200 with some pretty degraded rca input jacks. I want to replace with these chassis mount ones. It looks like the old jacks are grounded to the chassis but am not sure. Do the replacement ones get grounded to the chassis of the unit or should I isolate them? On...
    • Forbes
    • Thread
    • hafler dh-200 input rca
    • Replies: 2
    • Forum: DIY
  2. P

    Hafler dh200 on stacked advents

    stacking 2 pairs of large advents in parallel on a pioneer sx-850 is probably not a good idea, but if you had a hafler dh200 running off the 850’s preamp out, could that handle it? https://www.kenrockwell.com/audio/hafler/dh-200.htm This spec sheet says: Stereo 4Ω 107 mV for 1 W output into...
  3. GlasgowGrip

    Anyone know a good substitute for 2N5401?

    Hello all, I'm doing a minimalist refurb of my Hafler DH-200, no real mods, basically just upgrading caps, a few key resistors, the power switch and rectifier bridge. I'm also looking to replace the 2N5550 and 2N5401 differential pair transistors to lower the offset - it has high offset on the...
    • GlasgowGrip
    • Thread
    • hafler dh-200 transistor substitute
    • Replies: 12
    • Forum: DIY
  4. MKG

    hafler dh-200 issues

    alright, so- I've got two of these. both were working fine. I had installed a bridging kit and they worked fine after that, I then decided that I wanted to go back to two two channel amps. removed bridging kit. One is working fine. the other, I decided to go ahead and replace input/output jacks...
    • MKG
    • Thread
    • hafler dh-200 output mosfet testing
    • Replies: 5
    • Forum: DIY
  5. James Harco

    If you had your choice.

    I need some advice. Apparently I suffer from "audio gear acquisition syndrome". That said? i'm shopping for another amp. My options are Hafler 200, Adcom 535, Adcom 545, and lastly a Dynaco 410 (wish it was the 400, love the blue light dial kit). All are about the same price given how far I...
  6. Chriswashere

    Hafler dh-200 VS Hafler dh-120

    What sounds better, Hafler dh-200 or Hafler dh-120? I own both and already have an opinion on this subject but I was wondering what everyone else thought. Many people disagree with my findings.
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