# Amplifiers **URL:** https://forum.psaudio.com/c/audio-components/amplifiers/31.md?page=3 [Latest](https://forum.psaudio.com/latest.md) · [Categories](https://forum.psaudio.com/categories.md) · [Tags](https://forum.psaudio.com/tags.md) **Page:** 4 --- ## [Dynamic Headroom - Low v High Power Amps](https://forum.psaudio.com/t/dynamic-headroom-low-v-high-power-amps/32845)
**Author:** [@allan.thunes](https://forum.psaudio.com/u/allan.thunes)\ **Replies:** 5\ **Last updated:** [July 30, 2024, 3:00am UTC](https://forum.psaudio.com/t/dynamic-headroom-low-v-high-power-amps/32845 "2024-07-30T03:00:12Z")
One of many things that confuse me is dynamic headroom. I get the basic concept but wonder about the practical conditions where it makes an actual difference. Specifically I’m thinking of low vs high power amps. I hav… --- ## [BHK 300 monoblocks with which speakers?](https://forum.psaudio.com/t/bhk-300-monoblocks-with-which-speakers/37657)
**Author:** [@onehorsepony](https://forum.psaudio.com/u/onehorsepony)\ **Replies:** 21\ **Last updated:** [July 29, 2024, 10:33pm UTC](https://forum.psaudio.com/t/bhk-300-monoblocks-with-which-speakers/37657 "2024-07-29T22:33:31Z")
This is probably the ultimate question for me… I’m auditioning a pair of BHK 300’s connected to my BHK preamp and mark levinson 5101 SACD player. As of now, I’m having issues enjoying the BHK 300’s. I like to think year… --- ## [BHK 300 tube glow](https://forum.psaudio.com/t/bhk-300-tube-glow/38046)
**Author:** [@John\_Dubya](https://forum.psaudio.com/u/John_Dubya)\ **Replies:** 8\ **Last updated:** [July 7, 2024, 11:03am UTC](https://forum.psaudio.com/t/bhk-300-tube-glow/38046 "2024-07-07T11:03:08Z")
Is it normal to have an orange glow in the area of the tubes in my BHK 300 amps when they are in standby? Thanks in advance. --- ## [Left a BHK 300 on by accident for 24 hours](https://forum.psaudio.com/t/left-a-bhk-300-on-by-accident-for-24-hours/37957)
**Author:** [@onehorsepony](https://forum.psaudio.com/u/onehorsepony)\ **Replies:** 10\ **Last updated:** [July 6, 2024, 11:57pm UTC](https://forum.psaudio.com/t/left-a-bhk-300-on-by-accident-for-24-hours/37957 "2024-07-06T23:57:20Z")
Just curious, I accidently forgot to shut one of my BHK 300’s off last night. The BHK preamp and other 300 I turned off. Musth’ve had a brain burp. Should I do anything to ‘align’ the amp with the other amp, such as leav… --- ## [You don't need as much power as you think or are told you need](https://forum.psaudio.com/t/you-dont-need-as-much-power-as-you-think-or-are-told-you-need/37677)
**Author:** [@RonP](https://forum.psaudio.com/u/RonP)\ **Replies:** 34\ **Last updated:** [July 4, 2024, 1:27am UTC](https://forum.psaudio.com/t/you-dont-need-as-much-power-as-you-think-or-are-told-you-need/37677 "2024-07-04T01:27:41Z")
“Modest amounts of negative feedback are balanced in counterpoint to small amount of positive current feedback, creating an equilibrium where the output impedance approaches zero, improving transient and frequency resp… --- ## [Tubes on BHK250?](https://forum.psaudio.com/t/tubes-on-bhk250/37923)
**Author:** [@Andy\_Walters](https://forum.psaudio.com/u/Andy_Walters)\ **Replies:** 6\ **Last updated:** [June 25, 2024, 10:49pm UTC](https://forum.psaudio.com/t/tubes-on-bhk250/37923 "2024-06-25T22:49:17Z")
So, I think I need to replace tube in my BHK250. Bought matched pair Gold Lion Genalex ECC82/B749. Will these tubes work in the BHK250? Cheers Andy --- ## [BHK 300 Power Consumption](https://forum.psaudio.com/t/bhk-300-power-consumption/37864)
**Author:** [@onehorsepony](https://forum.psaudio.com/u/onehorsepony)\ **Replies:** 2\ **Last updated:** [June 17, 2024, 9:50pm UTC](https://forum.psaudio.com/t/bhk-300-power-consumption/37864 "2024-06-17T21:50:59Z")
I’m sure this has been addressed before, though I couldn’t find any discussion. Does anyone know how much power the BHK 300’s use when in standby mode (tubes off, switch in back on)? Also, how much power do they consume … --- ## [New stellar strata mk2](https://forum.psaudio.com/t/new-stellar-strata-mk2/37692)
**Author:** [@Mikeelo](https://forum.psaudio.com/u/Mikeelo)\ **Replies:** 5\ **Last updated:** [June 7, 2024, 10:49am UTC](https://forum.psaudio.com/t/new-stellar-strata-mk2/37692 "2024-06-07T10:49:53Z")
Hi. Have someone listened to this yet? I am very curious🤔 --- ## [The main reason why I have not purchased PS Audio amps yet](https://forum.psaudio.com/t/the-main-reason-why-i-have-not-purchased-ps-audio-amps-yet/37717)
**Author:** [@SoundMan1](https://forum.psaudio.com/u/SoundMan1)\ **Replies:** 33\ **Last updated:** [June 4, 2024, 1:31am UTC](https://forum.psaudio.com/t/the-main-reason-why-i-have-not-purchased-ps-audio-amps-yet/37717 "2024-06-04T01:31:47Z")
I was interested in the M700 and then later after learning about some updates that 1200 has over the 700, I considered purchasing it to replace my Adcom 555. However, after seeing the 2 circuits boards inside the M1200, … --- ## [Class A amps](https://forum.psaudio.com/t/class-a-amps/24592)
**Author:** [@timm](https://forum.psaudio.com/u/timm)\ **Replies:** 82\ **Last updated:** [June 1, 2024, 3:55pm UTC](https://forum.psaudio.com/t/class-a-amps/24592 "2024-06-01T15:55:49Z")
Hi all. So I’ve been looking at some amps as of late - and I ran across the Pass Labs XA series of amps that are pure class A designs. The xa100.5 @ 8 ohm puts out 100watts in class a then goes into a/b beyond that. Th… --- ## [Pass Labs XA30.8 vs BHK250](https://forum.psaudio.com/t/pass-labs-xa30-8-vs-bhk250/37667)
**Author:** [@karthick](https://forum.psaudio.com/u/karthick)\ **Replies:** 3\ **Last updated:** [May 27, 2024, 11:30pm UTC](https://forum.psaudio.com/t/pass-labs-xa30-8-vs-bhk250/37667 "2024-05-27T23:30:52Z")
More than anything, I want to learn to objectively compare specs. Since each audio company uses slightly different way to publish these details, I dont know if I’m comparing it in a right way. If you see these 2 specs, … --- ## [PS Audio Stellar S300 amplifier + PSB Synchrony One speakers = some distortion around sustained volume of 75-80 dBs? suggestions to resolve?](https://forum.psaudio.com/t/ps-audio-stellar-s300-amplifier-psb-synchrony-one-speakers-some-distortion-around-sustained-volume-of-75-80-dbs-suggestions-to-resolve/37545)
**Author:** [@hotrats](https://forum.psaudio.com/u/hotrats)\ **Replies:** 22\ **Last updated:** [May 27, 2024, 9:17pm UTC](https://forum.psaudio.com/t/ps-audio-stellar-s300-amplifier-psb-synchrony-one-speakers-some-distortion-around-sustained-volume-of-75-80-dbs-suggestions-to-resolve/37545 "2024-05-27T21:17:21Z")
Hi, long-time Copper magazine reader, first-time PS Audio owner… :wink: I’ll cut to the chase with a provocative summary of my situation, but please read the context that follows before responding: I wonder what is go… --- ## [BHK 250 discontinued- what’s next and what about the 300’s?](https://forum.psaudio.com/t/bhk-250-discontinued-what-s-next-and-what-about-the-300-s/36706)
**Author:** [@emailists](https://forum.psaudio.com/u/emailists)\ **Replies:** 24\ **Last updated:** [May 26, 2024, 10:21pm UTC](https://forum.psaudio.com/t/bhk-250-discontinued-what-s-next-and-what-about-the-300-s/36706 "2024-05-26T22:21:07Z")
I just got an email about the 250 being discontinued. Any scoop what will replace them or about the status of the 300’s? Not sure if this is already being discussed. --- ## [Issue with my BHK 300 after house move](https://forum.psaudio.com/t/issue-with-my-bhk-300-after-house-move/37604)
**Author:** [@raouldukenukem](https://forum.psaudio.com/u/raouldukenukem)\ **Replies:** 6\ **Last updated:** [May 22, 2024, 3:59pm UTC](https://forum.psaudio.com/t/issue-with-my-bhk-300-after-house-move/37604 "2024-05-22T15:59:58Z")
Hi all, just looking for some expert advice. I have the BHK Pre and BHK 300s and have run into an issue following an international relocation. Having received all our furniture a few days back, I was eager to hook every… --- ## [Made an Impulse Purchase ! BHK 250](https://forum.psaudio.com/t/made-an-impulse-purchase-bhk-250/37386)
**Author:** [@WeNeedHelp](https://forum.psaudio.com/u/WeNeedHelp)\ **Replies:** 45\ **Last updated:** [May 20, 2024, 12:07am UTC](https://forum.psaudio.com/t/made-an-impulse-purchase-bhk-250/37386 "2024-05-20T00:07:13Z")
Hey all. First post !!. I usually conduct an inordinate amount of research and reading before buying something but I was having a moment of freedom and made an impulse buy. Have you ever done that and then began wond… --- ## [Pricier integrated vs cheaper seperates?](https://forum.psaudio.com/t/pricier-integrated-vs-cheaper-seperates/24711)
**Author:** [@cheongchaklaw](https://forum.psaudio.com/u/cheongchaklaw)\ **Replies:** 34\ **Last updated:** [May 18, 2024, 3:40pm UTC](https://forum.psaudio.com/t/pricier-integrated-vs-cheaper-seperates/24711 "2024-05-18T15:40:04Z")
Been eyeing on Mcintosh MA 5200 / Accuphase E 280 as well as seperates like Schiit Freya+ and the XTZ Edges… Which option do you think has the best value and sound quality? (Happy user of Stellar P3 btw) --- ## [BHK 250 transformer rating](https://forum.psaudio.com/t/bhk-250-transformer-rating/37511)
**Author:** [@sotovar](https://forum.psaudio.com/u/sotovar)\ **Replies:** 6\ **Last updated:** [May 14, 2024, 9:58pm UTC](https://forum.psaudio.com/t/bhk-250-transformer-rating/37511 "2024-05-14T21:58:42Z")
Hi there, I am thinking to transfer my BHK250 to another system driving electrostats - older ML SL3 well cared for, which still run great. I do not think I have seen anywhere a rating in VA for the main transformer used… --- ## ["Replacement" for BHK250?](https://forum.psaudio.com/t/replacement-for-bhk250/37502)
**Author:** [@bstanwick](https://forum.psaudio.com/u/bstanwick)\ **Replies:** 19\ **Last updated:** [May 13, 2024, 10:14pm UTC](https://forum.psaudio.com/t/replacement-for-bhk250/37502 "2024-05-13T22:14:05Z")
The BHK250 has been on closeout for a while now. Can anyone at PS Audio comment on a possible planned replacement for this amplifier? Even a hint as to what might (or might not be planned). As a BHK250 owner, I might … --- ## [BHK 300 longevity](https://forum.psaudio.com/t/bhk-300-longevity/37415)
**Author:** [@onehorsepony](https://forum.psaudio.com/u/onehorsepony)\ **Replies:** 8\ **Last updated:** [May 10, 2024, 6:12pm UTC](https://forum.psaudio.com/t/bhk-300-longevity/37415 "2024-05-10T18:12:41Z")
Question for all the audio experts… recently thinking of purchasing a pair of BHK 300 monoblocks, I have several questions and/or concerns. Even when off, they are in a standby mode and the heatsinks are slightly warm. … --- ## [Paul: new FET amplifier design](https://forum.psaudio.com/t/paul-new-fet-amplifier-design/34058)
**Author:** [@Nikos](https://forum.psaudio.com/u/Nikos)\ **Replies:** 8\ **Last updated:** [May 4, 2024, 9:16pm UTC](https://forum.psaudio.com/t/paul-new-fet-amplifier-design/34058 "2024-05-04T21:16:48Z")
Paul, in your youtube videos you have mentioned a couple of times a new FET power amplifier design that sonically challenges the existing hybrid BHK amps. Would you care to give some more information on this design? --- ## [M700 with thiels](https://forum.psaudio.com/t/m700-with-thiels/9421)
**Author:** [@jkt](https://forum.psaudio.com/u/jkt)\ **Replies:** 24\ **Last updated:** [May 3, 2024, 9:20pm UTC](https://forum.psaudio.com/t/m700-with-thiels/9421 "2024-05-03T21:20:56Z")
Picked up the m700’s last December to replace an overheating 3 channel amp for my thiel 3.7’s (and 2.7 center). The thiels drop to 2.4 ohms and require some power. The m700’s are a huge improvement. The overall sound … --- ## [My new review for The Absolute Sound comparing AGD GAN with BHK300’s](https://forum.psaudio.com/t/my-new-review-for-the-absolute-sound-comparing-agd-gan-with-bhk300-s/37285)
**Author:** [@emailists](https://forum.psaudio.com/u/emailists)\ **Replies:** 24\ **Last updated:** [April 18, 2024, 2:52pm UTC](https://forum.psaudio.com/t/my-new-review-for-the-absolute-sound-comparing-agd-gan-with-bhk300-s/37285 "2024-04-18T14:52:13Z")
I am normally best suited to be behind the camera, but The Absolute Sound convinced me I should try my hand at reviewing. In listening to AGD’s GAN amps I compared them with my BHK300’s. This was done direct from from … --- ## [Just bought used BHK preamp and 300 mono blocks](https://forum.psaudio.com/t/just-bought-used-bhk-preamp-and-300-mono-blocks/37184)
**Author:** [@CuriousJim](https://forum.psaudio.com/u/CuriousJim)\ **Replies:** 10\ **Last updated:** [April 10, 2024, 1:16am UTC](https://forum.psaudio.com/t/just-bought-used-bhk-preamp-and-300-mono-blocks/37184 "2024-04-10T01:16:12Z")
Right now I have an Audience AR 6 power conditioner plugged into a dedicated 20amp plug. I have everything plugged into it. When I turn on just the mono blocks, there is a quiet, but very noticeable 60 cycle hum. When I … --- ## [Aftermarket fuses in the BHK 300s](https://forum.psaudio.com/t/aftermarket-fuses-in-the-bhk-300s/2877)
**Author:** [@woodburger](https://forum.psaudio.com/u/woodburger)\ **Replies:** 63\ **Last updated:** [April 7, 2024, 3:49pm UTC](https://forum.psaudio.com/t/aftermarket-fuses-in-the-bhk-300s/2877 "2024-04-07T15:49:20Z")
I’d like to try aftermarket fuses and Paul even wrote a nice comment about hi fi tuning fuses, but I can’t find any h rated specialty fuses. At listening levels my Bhks draw about 200 watts. Can I get away with a non h … --- ## [BHK Monoblock 300 compared to Classes CAM 200 Monoblocks](https://forum.psaudio.com/t/bhk-monoblock-300-compared-to-classes-cam-200-monoblocks/37128)
**Author:** [@onehorsepony](https://forum.psaudio.com/u/onehorsepony)\ **Replies:** 4\ **Last updated:** [April 4, 2024, 12:28am UTC](https://forum.psaudio.com/t/bhk-monoblock-300-compared-to-classes-cam-200-monoblocks/37128 "2024-04-04T00:28:21Z")
Hi all - Recently purchased a BHK preamp for my B&W 802D (1st gen) driven my a pair of Classe CAM 200 monoblock amplifiers. Thinking of upgrading my monoblocks to the BHK monoblock 300’s. Will I hear much of a differe… --- ## [Do BHK amps need surge protection?](https://forum.psaudio.com/t/do-bhk-amps-need-surge-protection/37097)
**Author:** [@jimmywho](https://forum.psaudio.com/u/jimmywho)\ **Replies:** 1\ **Last updated:** [March 31, 2024, 9:12pm UTC](https://forum.psaudio.com/t/do-bhk-amps-need-surge-protection/37097 "2024-03-31T21:12:53Z")
Do large amplifiers like the BHKs need surge protection to protect them? Or can they absorb power surges and be fine on their own? (I know lightening can fry anything, let’s not worry about that scenario). I’ve got a de… --- ## [Biwiring BHK 250](https://forum.psaudio.com/t/biwiring-bhk-250/37053)
**Author:** [@magister](https://forum.psaudio.com/u/magister)\ **Replies:** 10\ **Last updated:** [March 27, 2024, 6:57pm UTC](https://forum.psaudio.com/t/biwiring-bhk-250/37053 "2024-03-27T18:57:11Z")
The BHK 250 has two output terminals for each channel. My Von Schweickert speakers benefit from biwiring. Is there any sonic difference between using a biwire set or simply purchasing two pair of cables, connecting the b… --- ## [BHK M600s...just how good are they?](https://forum.psaudio.com/t/bhk-m600s-just-how-good-are-they/37056)
**Author:** [@jeffreybehr](https://forum.psaudio.com/u/jeffreybehr)\ **Replies:** 0\ **Last updated:** [March 27, 2024, 6:02am UTC](https://forum.psaudio.com/t/bhk-m600s-just-how-good-are-they/37056 "2024-03-27T06:02:29Z")
First, I had a pair but they were damaged in transit, and I’ve requested a refund because I still don’t have the pair of speakers, Sound Lab Majestic 745s, they would be driving. So, owners, pls tell us just how good th… --- ## [Anyone use M1200s with electrostatics?](https://forum.psaudio.com/t/anyone-use-m1200s-with-electrostatics/37015)
**Author:** [@jeffreybehr](https://forum.psaudio.com/u/jeffreybehr)\ **Replies:** 13\ **Last updated:** [March 23, 2024, 7:57pm UTC](https://forum.psaudio.com/t/anyone-use-m1200s-with-electrostatics/37015 "2024-03-23T19:57:58Z")
If so, your experience? --- ## [BHK 250 vs Quad platinum](https://forum.psaudio.com/t/bhk-250-vs-quad-platinum/37007)
**Author:** [@jeanlucgodin](https://forum.psaudio.com/u/jeanlucgodin)\ **Replies:** 4\ **Last updated:** [March 20, 2024, 2:42pm UTC](https://forum.psaudio.com/t/bhk-250-vs-quad-platinum/37007 "2024-03-20T14:42:27Z")
Does anyone have experience Quad Platinum stereo or mono block amps? I am debating between bhk 250 stereo amp or quad platinum monos. (both used). I can get the quad monoblocks for about $1000 less. Are these as good (o… [Previous page](https://forum.psaudio.com/c/audio-components/amplifiers/31.md?page=2) [Next page](https://forum.psaudio.com/c/audio-components/amplifiers/31.md?page=4)