power amplifer

  1. M

    Need Help- Studio Power amp: Getting a good amp for around 400 Euros budget

    Hello everyone, been following and reading reviews on here for a while so i thought this might be the perfect place for someone to chime in and help me out on this. Looking around to buy a power amplifier for my studio, Currently running a pair of passive 8ohm Acoustic Energy AE22's on a...
  2. orchardaudio

    Measurements of the Audio Alchemy Overture OM150

    I had a local customer let me borrow their Audio Alchemy Overture OM150 amplifier. This amplifier has a separate power supply (PSU150), see picture. Here are the measurements. I only did 8 ohm measurements as all specifications I was able to find online listed only 8 ohm numbers.
  3. P

    Could someone tell me all the ways I could damage this amp?

    Hello all. I have an Audiophonics LPA-S400ET power amp and I was wondering if it has any of these so called protection features I've been hearing about. Does anyone know what it cannot protect against? Main reason I ask is I have this headphone amp (Sterling SHA4) I got awhile ago at a guitar...
  4. Pecrobet

    Rotel RB-1552 MK II Amplifier

    I recently purchased power amplifier to for additional power and head room. I use my Cambridge Audio CXA81 as preamp. My main audio system components consist of: Cambridge Audio CXA81, Cambridge Audio DAC Magic, OPPO BDP-93 CD player, pair of Warfedale Linton 85 speakers and pair of REL T5x...
  5. nawfal07

    Eversolo AMP-F2 Class D Power Amplifier (Coming Soon)

    Eversolo has teased a new product at the Shanghai International Smart Home Exhibition last week. It's a Class D power amplifier and if I can read it right the model name is AMP-F2. This will be the first amplifier from the company, which is a subsidiary of Zidoo. Their first few products...
  6. orchardaudio

    For Sale: Used Starkrimson Stereo Ultra (Dual Mono w/ Caps)

    I have a used Starkrimson Stereo Ultra for sale for $3300 + shipping. MSRP is $3800 Custom silver front panel Dual mono with capacitor upgrade XLR inputs 110/120 AC input (can be changed to 220/240V). 1-year warranty included.
  7. P

    Power upgrade ???

    I own a Denon 8500HA with 150 wpc 2 channel rated... I just bought a pair of Revel F208 for 2 channel listing....listing in "Pure Direct" They sound great... BUT what kind of power upgrade would make them sound "Much" better.... Or am I just going down the rabbit hole ??? Just stream...
  8. orchardaudio

    2022 Speakerfest in Phoenix, AZ -- August 27th

    I am proud to announce that we will be present at the 2022 Speakerfest in Phoenix, AZ Orchard Audio will have two setups at the event. Setup 1: Floor standing (ELAC Uni-Fi Reference UFR52) speakers driven by the Starkrimson Stereo Ultra amplifier Setup 2: Bookshelf (ELAC Uni-Fi Reference UBR62)...
  9. A

    Can Class D used well for Front Stage?

    Hi, all I’ve used class a/b audio power amp for running a front stage... when i read a note Class D Audio Amplifier Basic and DIY Example, i wonder can class d do just as well? if so what are your recommendations for class d amplifiers that are almost as good and can pass SQ qualifications...
  10. A

    Newbie question. I bought an AVR but I'm not impressed by the sound. If I get a preamp then could I use my AVR solely as a power amp?

    Hey everyone, second post here. I bought a used Denon S540H along with two KEF Q150 speakers, and while the sound is pretty great there is a lot of static noise that is coming through at medium-to-high volumes. I also feel like the sound could be a lot better. Aside from that, I hate the Heos...
  11. D

    Worthwhile Plate Amp Candidates<=100W

    Hey all, I've been having fun with my recent DIY speakers, but I'm routinely disappointed with my hand-me-down, buzzy receiver or my distorted at high volume, no headroom desktop budget all-in-one amplifier. I like the way my buddy's JBL LSR305's are set up on the back, and as much as possible...
  12. orchardaudio

    Parasound 275V2 Measurements

    All, One of my customers send me this amplifier interested in how it will compare against the Starkrimson Stereo Ultra. Anyway I figured I would also post the measurements here for everybody's benefit. This amplifier is current selling for $595.00 on amazon All measurements are with 8ohm...
  13. R

    Digitally reducing volume when connecting DSP directly to power amplifier

    My current setup takes all its different inputs into a MiniDSP 2x4HD which acts as my DAC, and the output is connected directly into the power amplifier (main in) of my NAD C352 (80W per channel). Volume is controlled on the DSP. Currently, to get output volume at 0dB on the DSP that's not too...
  14. pma

    DIY 250W/4ohm amplifier based on "blameless" topology, and measurements

    DIY 250W/4ohm power amplifier based on “blameless” topology Hello all, the thread posted here by @sabristol https://www.audiosciencereview.com/forum/index.php?threads/luxman-l-85v-integrated-amplifier.20657/ inspired me to build a new DIY amplifier functional sample. The circuit posted in the...
  15. pma

    AIYIMA A07 TPA3255 Amplifier Measurements and Review - LM4562 (and OPA2134) option

    AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. Purchased at Amazon.de and as stated on their website, it arrived without a power supply. I am testing the A07 with 2 different power supplies. One of them is a linear...
  16. VintageFlanker

    BoXem Audio Arthur 2408/N2 Review (Stereo Power Amplifier)

    Disclaimer: This review sample was kindly loaned to me by @boXem | audio. I have no financial relationship with the brand whatsoever, nor had got paid to say anything good or bad about this amplifier. Also, my English still sucks even after being there for two years, so please be easy on that.;)...
  17. P

    DAC/PreAmp + PowerAmp or integrated amp for Amphion Helium 520

    Hi! I bought few months ago Amphion Helium 520 speakers: Amphion Helium 520 Specs: Sensitivity: 90dB Power recommendation: 10-150w (4Ohm) I currently have my old Denon AVR-1611 integrated amp and now I want to get stereo amplifier for Amphions. I dont need 5.1 or 7.1 surround anymore. Budget...
  18. R

    Matching headphone impedance against OEM specs

    So I use http:// www. digizoid. com/ power .php to calculate the mW needed to power headphones. My HiFiMan HE400i impedance is 35ohms and my bayerdynamics custom studios are 80ohms. Most manufacturer specs state for 16/32/300 ohms like for example: - My fiio k3 specs on unbalanced output...
  19. R

    McIntosh MC252 Power Amplifier

    McIntosh MC252 Power Amplifier $3200 I'm offering MC252 in very good working condition. Voltage: 120V Cosmetic Description: 9/10 Excellent condition with no notable blemishes. What is Included: Amplifier, Remote, Manual, Factory packaging Functional Notes: Operational condition of this item is...
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