# Amplifiers **URL:** https://forum.psaudio.com/c/audio-components/amplifiers/31.md?page=1 [Latest](https://forum.psaudio.com/latest.md) · [Categories](https://forum.psaudio.com/categories.md) · [Tags](https://forum.psaudio.com/tags.md) **Page:** 2 --- ## [How to connect a single REL S/510 to an BHK 250](https://forum.psaudio.com/t/how-to-connect-a-single-rel-s-510-to-an-bhk-250/43686)
**Author:** [@Martin-Andersen](https://forum.psaudio.com/u/Martin-Andersen)\ **Replies:** 3\ **Last updated:** [February 11, 2026, 3:38am UTC](https://forum.psaudio.com/t/how-to-connect-a-single-rel-s-510-to-an-bhk-250/43686 "2026-02-11T03:38:34Z")
Some years ago, I wrote about connecting two REL /S/510 to the BHK and how to avoid hum. see my old post How to connect a REL S/510 to an BHK 250 Because of restricting in space, I will need stack the two subs to the r… --- ## [Best Valves To Use On The BHK 250](https://forum.psaudio.com/t/best-valves-to-use-on-the-bhk-250/4212)
**Author:** [@bhobba](https://forum.psaudio.com/u/bhobba)\ **Replies:** 8\ **Last updated:** [February 1, 2026, 7:29pm UTC](https://forum.psaudio.com/t/best-valves-to-use-on-the-bhk-250/4212 "2026-02-01T19:29:51Z")
Hi Guys I am pretty sure the valves in my 250 need replacing. I know someone that specializes in getting the best valves - his knowledge is amazing (Stevenvalve for those that know the Aus scene). I know it uses well … --- ## [PS Audio Trio C-100 repair question](https://forum.psaudio.com/t/ps-audio-trio-c-100-repair-question/43504)
**Author:** [@ohart](https://forum.psaudio.com/u/ohart)\ **Replies:** 3\ **Last updated:** [January 30, 2026, 1:49pm UTC](https://forum.psaudio.com/t/ps-audio-trio-c-100-repair-question/43504 "2026-01-30T13:49:21Z")
Hello everyone, I am looking for a little bit of help. I own a PS Audio Trio C-100 amplifier that very recently decided to stop making sound in the left channel. This particular Trio was modded in the past by someone … --- ## [M1200 vs Krell KSA80](https://forum.psaudio.com/t/m1200-vs-krell-ksa80/43415)
**Author:** [@Brozius](https://forum.psaudio.com/u/Brozius)\ **Replies:** 37\ **Last updated:** [January 18, 2026, 5:12pm UTC](https://forum.psaudio.com/t/m1200-vs-krell-ksa80/43415 "2026-01-18T17:12:17Z")
Hi there, I am in the position to buy a used pair of M1200 amps. I want to know how it would compare to my current amp the Krell KSA80. I have a AR Sp9 as a pre-amp and Magnepan Tympani 4a Speakers. The room is large. 29… --- ## [Problem with low volume/gain using S300 amp with a Ladder Bach DAC](https://forum.psaudio.com/t/problem-with-low-volume-gain-using-s300-amp-with-a-ladder-bach-dac/43447)
**Author:** [@Cjdnola](https://forum.psaudio.com/u/Cjdnola)\ **Replies:** 25\ **Last updated:** [January 16, 2026, 6:34pm UTC](https://forum.psaudio.com/t/problem-with-low-volume-gain-using-s300-amp-with-a-ladder-bach-dac/43447 "2026-01-16T18:34:00Z")
I purchased an S 300 amplifier. I am using it with a ladder Bach preamp. For the moment, I’m connecting it with RCA connectors but plan on using XLR eventually. Bottom line is I’m getting very little volume out of the se… --- ## [Question about op-amps and feedback](https://forum.psaudio.com/t/question-about-op-amps-and-feedback/43465)
**Author:** [@ericrosenfield](https://forum.psaudio.com/u/ericrosenfield)\ **Replies:** 0\ **Last updated:** [January 10, 2026, 6:46pm UTC](https://forum.psaudio.com/t/question-about-op-amps-and-feedback/43465 "2026-01-10T18:46:05Z")
Alright technical question for anyone who knows electrical engineering stuff: my understanding is this: triode tubes require less or no feedback because they’re basically linear and low current so you can just control th… --- ## [Changing the gain on my S300](https://forum.psaudio.com/t/changing-the-gain-on-my-s300/12476)
**Author:** [@danny](https://forum.psaudio.com/u/danny)\ **Replies:** 32\ **Last updated:** [January 8, 2026, 5:07pm UTC](https://forum.psaudio.com/t/changing-the-gain-on-my-s300/12476 "2026-01-08T17:07:01Z")
I’m wondering if there is any way that I can change the gain on my Stellar S300? I have a SGCD and S300 and my volume level, with digital input is at night about 1 or 2, and during the day at maximum 15 or the highest I… --- ## [Pmg headphone amp](https://forum.psaudio.com/t/pmg-headphone-amp/43117)
**Author:** [@msaladino22](https://forum.psaudio.com/u/msaladino22)\ **Replies:** 2\ **Last updated:** [November 15, 2025, 5:47pm UTC](https://forum.psaudio.com/t/pmg-headphone-amp/43117 "2025-11-15T17:47:18Z")
Since now there is no headphone amp in the PMG Pre, has anyone heard any plans on a separate one coming out. My Audeze’s are feeling a little left out🤣 --- ## [Decware. The Best Amp Ever? Andrew Robinson Seems To Think So](https://forum.psaudio.com/t/decware-the-best-amp-ever-andrew-robinson-seems-to-think-so/23042)
**Author:** [@dancingsea](https://forum.psaudio.com/u/dancingsea)\ **Replies:** 312\ **Last updated:** [November 9, 2025, 4:33pm UTC](https://forum.psaudio.com/t/decware-the-best-amp-ever-andrew-robinson-seems-to-think-so/23042 "2025-11-09T16:33:51Z")
--- ## [BHK Preamp tube rolling](https://forum.psaudio.com/t/bhk-preamp-tube-rolling/3403)
**Author:** [@Jack65](https://forum.psaudio.com/u/Jack65)\ **Replies:** 1378\ **Last updated:** [November 6, 2025, 4:17am UTC](https://forum.psaudio.com/t/bhk-preamp-tube-rolling/3403 "2025-11-06T04:17:10Z")
After a bit of a search, I haven’t found much about tube rolling experience with the Preamp. It would be interesting to hear what changes have been noticed switching out of the stock tubes to, say, the Tungsram. --- ## [PS Audio Elite Amplifier](https://forum.psaudio.com/t/ps-audio-elite-amplifier/19989)
**Author:** [@portersat](https://forum.psaudio.com/u/portersat)\ **Replies:** 28\ **Last updated:** [October 21, 2025, 10:49pm UTC](https://forum.psaudio.com/t/ps-audio-elite-amplifier/19989 "2025-10-21T22:49:24Z")
Hi to each and every one I hope your all safe and well, Two days ago I purchased a faulty PS audio Elite Amplifier, the board responsible for volume and balance has caught fire on one of the channels, I don’t have it in… --- ## [What goes around, comes around?](https://forum.psaudio.com/t/what-goes-around-comes-around/42739)
**Author:** [@jeffreybehr](https://forum.psaudio.com/u/jeffreybehr)\ **Replies:** 5\ **Last updated:** [October 2, 2025, 7:01am UTC](https://forum.psaudio.com/t/what-goes-around-comes-around/42739 "2025-10-02T07:01:15Z")
Because they were simply too big for my system, I have consigned my Sound Lab Majestic 745s to The Music Room and have a pair of Eminent Technology LFT-8Cs arriving this Saturday. Monoamps on hand include Pass XA60.8s a… --- ## [M1200 tubing](https://forum.psaudio.com/t/m1200-tubing/42842)
**Author:** [@Ken\_Eis](https://forum.psaudio.com/u/Ken_Eis)\ **Replies:** 3\ **Last updated:** [September 30, 2025, 9:03pm UTC](https://forum.psaudio.com/t/m1200-tubing/42842 "2025-09-30T21:03:46Z")
When should you be thinking about replacing the tubes in a M1200? I have three years and it runs on average about 3 hours a day. Also any suggestions on what tubes to buy as a replacement? --- ## [No audio left channel - Stellar Strata](https://forum.psaudio.com/t/no-audio-left-channel-stellar-strata/42692)
**Author:** [@Lotus54](https://forum.psaudio.com/u/Lotus54)\ **Replies:** 5\ **Last updated:** [September 22, 2025, 4:02pm UTC](https://forum.psaudio.com/t/no-audio-left-channel-stellar-strata/42692 "2025-09-22T16:02:39Z")
I picked up a used Stellar Strata. I get no audio out left side, when I am using any of the analog inputs. The coax digital in works just fine. Any troubleshooting ideas? Firmware 2.3.0 --- ## [Why is the PMG so bland?](https://forum.psaudio.com/t/why-is-the-pmg-so-bland/42741)
**Author:** [@SPOOKY.MANFREDDY](https://forum.psaudio.com/u/SPOOKY.MANFREDDY)\ **Replies:** 19\ **Last updated:** [September 20, 2025, 3:25am UTC](https://forum.psaudio.com/t/why-is-the-pmg-so-bland/42741 "2025-09-20T03:25:03Z")
Hi everyone… Moring Paul :slight\_smile: Starting out my audio experience for a second time to get back into hi fidelity. During my hunt I’ve had the pleasure of trying classe delta stereo, Micromega M100 integrated. Anth… --- ## [Found Some Great Sounding NOS Tubes For BHK250](https://forum.psaudio.com/t/found-some-great-sounding-nos-tubes-for-bhk250/42594)
**Author:** [@stevehardy1](https://forum.psaudio.com/u/stevehardy1)\ **Replies:** 0\ **Last updated:** [August 30, 2025, 1:25pm UTC](https://forum.psaudio.com/t/found-some-great-sounding-nos-tubes-for-bhk250/42594 "2025-08-30T13:25:06Z")
I really disliked the Gold Lion E88CC, with their bright glare, grittiness and one dimensionality. So, a couple of years ago I took the plunge and bought some Japanese National PCC88s from Upscale Audio. They were a hu… --- ## [BHK 600s sound better after turning completely off?](https://forum.psaudio.com/t/bhk-600s-sound-better-after-turning-completely-off/42569)
**Author:** [@pcullen1](https://forum.psaudio.com/u/pcullen1)\ **Replies:** 6\ **Last updated:** [August 28, 2025, 1:36pm UTC](https://forum.psaudio.com/t/bhk-600s-sound-better-after-turning-completely-off/42569 "2025-08-28T13:36:43Z")
I recently fully powered down my 600s for the first time in a few weeks and then powered them back on about a half hour later. I normally leave them in standby mode when not using them. Coincidentally or not, my system t… --- ## [BHK Amplifier Issue](https://forum.psaudio.com/t/bhk-amplifier-issue/12393)
**Author:** [@Paul](https://forum.psaudio.com/u/Paul)\ **Replies:** 26\ **Last updated:** [August 24, 2019, 6:00am UTC](https://forum.psaudio.com/t/bhk-amplifier-issue/12393 "2019-08-24T06:00:07Z")
--- ## [One of my M700s died this morning](https://forum.psaudio.com/t/one-of-my-m700s-died-this-morning/42452)
**Author:** [@richard.martin](https://forum.psaudio.com/u/richard.martin)\ **Replies:** 24\ **Last updated:** [August 14, 2025, 2:18am UTC](https://forum.psaudio.com/t/one-of-my-m700s-died-this-morning/42452 "2025-08-14T02:18:25Z")
This morning I woke up to strange sounding music coming from my system (I stream music at night at low levels so my dog doesn’t wake up to outside sounds). I took a peek and noticed the blue power light on the front of … --- ## [BHK300 + McIntosh C53 Preamp](https://forum.psaudio.com/t/bhk300-mcintosh-c53-preamp/39920)
**Author:** [@perfektcom](https://forum.psaudio.com/u/perfektcom)\ **Replies:** 22\ **Last updated:** [July 27, 2025, 12:43am UTC](https://forum.psaudio.com/t/bhk300-mcintosh-c53-preamp/39920 "2025-07-27T00:43:35Z")
Hi, I have a GREAT deal on 5 year old BHK300 monoblocks here in Poland. I have a pair of B&W 802D3 and McIntosh C53 preamp. Does anyone know or had experience running BHK300’s with C53? Does anyone have experience or… --- ## [PMG Amp future?](https://forum.psaudio.com/t/pmg-amp-future/42135)
**Author:** [@akro](https://forum.psaudio.com/u/akro)\ **Replies:** 0\ **Last updated:** [July 7, 2025, 10:50am UTC](https://forum.psaudio.com/t/pmg-amp-future/42135 "2025-07-07T10:50:17Z")
Paul has been endorsing modern switch mode power and I think hinted at a new amp in the works. News? --- ## [What Are Your Favorite Current Production Tubes For The BHK 250?](https://forum.psaudio.com/t/what-are-your-favorite-current-production-tubes-for-the-bhk-250/41987)
**Author:** [@stevehardy1](https://forum.psaudio.com/u/stevehardy1)\ **Replies:** 11\ **Last updated:** [June 22, 2025, 7:55pm UTC](https://forum.psaudio.com/t/what-are-your-favorite-current-production-tubes-for-the-bhk-250/41987 "2025-06-22T19:55:51Z")
Excluding Gold Lion, which sound shrill and sibilant to me, what are your favorite current production tubes for the BHK 250? I have some National 7DJ8 NOS tubes that are really nice, but they’ll need replacing soon and … --- ## [BHK 300 Monos vs. Bi-amping w. 2x BHK 250?](https://forum.psaudio.com/t/bhk-300-monos-vs-bi-amping-w-2x-bhk-250/27074)
**Author:** [@Stephan\_from\_Hamburg](https://forum.psaudio.com/u/Stephan_from_Hamburg)\ **Replies:** 4\ **Last updated:** [January 17, 2022, 5:48pm UTC](https://forum.psaudio.com/t/bhk-300-monos-vs-bi-amping-w-2x-bhk-250/27074 "2022-01-17T17:48:24Z")
Hi everyone, does it make any sence to use two BHK 250 for either vertical or horizontal bi-amping rather than go directely for the 300s mono? eg different cables for treble and bass or could this just be smart option f… --- ## [M700 trigger wire](https://forum.psaudio.com/t/m700-trigger-wire/41914)
**Author:** [@happyg](https://forum.psaudio.com/u/happyg)\ **Replies:** 1\ **Last updated:** [June 12, 2025, 2:56am UTC](https://forum.psaudio.com/t/m700-trigger-wire/41914 "2025-06-12T02:56:30Z")
can i use a stereo 3.5mm cable (vs mono) for a trigger with m700s? --- ## [How To Replace Binding Post on McIntosh MC207 Amp](https://forum.psaudio.com/t/how-to-replace-binding-post-on-mcintosh-mc207-amp/41860)
**Author:** [@audiophilehi](https://forum.psaudio.com/u/audiophilehi)\ **Replies:** 6\ **Last updated:** [June 5, 2025, 2:32am UTC](https://forum.psaudio.com/t/how-to-replace-binding-post-on-mcintosh-mc207-amp/41860 "2025-06-05T02:32:28Z")
Looking to upgrade the binding posts on my McIntosh MC207 amp. It doesn’t appear to be difficult but would appreciate any suggestions or tips. Link below illustrates the binding posts on my amp. --- ## [BHK preamp review](https://forum.psaudio.com/t/bhk-preamp-review/4405)
**Author:** [@andytts](https://forum.psaudio.com/u/andytts)\ **Replies:** 23\ **Last updated:** [May 30, 2025, 6:19am UTC](https://forum.psaudio.com/t/bhk-preamp-review/4405 "2025-05-30T06:19:44Z")
I usually prefer to read about hifi equipment than write about it. One exception is when I encounter a problem with my hifi equipment and feel the need to let the manufacturer know. Another exception is when something is… --- ## [Anyone have photos of the inside of the BHK 250?](https://forum.psaudio.com/t/anyone-have-photos-of-the-inside-of-the-bhk-250/29106)
**Author:** [@Gary\_M](https://forum.psaudio.com/u/Gary_M)\ **Replies:** 7\ **Last updated:** [May 21, 2025, 6:09pm UTC](https://forum.psaudio.com/t/anyone-have-photos-of-the-inside-of-the-bhk-250/29106 "2025-05-21T18:09:00Z")
Just curious of the layout of internal parts. I use a Shakti stone on the amp, and it seems to make a difference where it sits. Would be interesting to know what part benefits the most from RFI protection. --- ## [How to add a ground connector to my BHK 250](https://forum.psaudio.com/t/how-to-add-a-ground-connector-to-my-bhk-250/32346)
**Author:** [@Martin-Andersen](https://forum.psaudio.com/u/Martin-Andersen)\ **Replies:** 21\ **Last updated:** [May 1, 2025, 7:17pm UTC](https://forum.psaudio.com/t/how-to-add-a-ground-connector-to-my-bhk-250/32346 "2025-05-01T19:17:45Z")
I just got two REL S/510. When I connect them the correct way, I hear a VERY loud huuumee. This is a known issue and can be fixed with connecting the black wire from the REL sub to ground on the amp, As I understand it… --- ## [S300 vs. M700](https://forum.psaudio.com/t/s300-vs-m700/41143)
**Author:** [@RickH](https://forum.psaudio.com/u/RickH)\ **Replies:** 14\ **Last updated:** [April 28, 2025, 5:24pm UTC](https://forum.psaudio.com/t/s300-vs-m700/41143 "2025-04-28T17:24:57Z")
Been driving my FR-10’s with the S300 for a year. Have been thinking about upgrading to the M700’s but wonder if there would be a significant (subjective I know) sonic improvement. Any thoughts? --- ## [Yesterday morning one of my amps was silent](https://forum.psaudio.com/t/yesterday-morning-one-of-my-amps-was-silent/41483)
**Author:** [@CuriousJim](https://forum.psaudio.com/u/CuriousJim)\ **Replies:** 7\ **Last updated:** [April 23, 2025, 10:22pm UTC](https://forum.psaudio.com/t/yesterday-morning-one-of-my-amps-was-silent/41483 "2025-04-23T22:22:42Z")
Yesterday morning I turned on my system (BHK pre and BHK300’s) and one channel didn’t work. After troubleshooting I discovered one of the fuses next to the IEC had blown. (Kinda strange because it worked fine the night b… [Previous page](https://forum.psaudio.com/c/audio-components/amplifiers/31.md) [Next page](https://forum.psaudio.com/c/audio-components/amplifiers/31.md?page=2)