amplifier

AB(x) testing of Power Amplifiers I had to do it. Once again I was convinced that I hear a difference in a sighted test, so I had to prepare a properly level matched A/B test. Two amplifiers, both of 2 x 50W/4ohm rated continuous sine power. conservatively designed class AB, with...

Hi guys, first of all i would like to say thank you for this amazing community :) I currently use this setup notebook/pc -> Modi 3 -> Shure 840 and decided to add an amplifier to this setup. My requirements are low: price should be < ~300 EUR / ~360 USD enough power for low impedance SHR840...

Beyerdynamic dt 770 pro 32, 80, 250 ohm all versions need 100 mW power. In this case, how is it easier to drive 32 ohm headphones than 80 or 250? if the audio interface audio output has a constant voltage ; 32 ohm dt 770 pro, uses much more amperage ( 'i' ) than 80ohm or 250 ohm dt 770 pros...

Hello, I am upgrading our homes in ceiling speaker system and the already existing wall plate controls. The best match I can find is the Home Theatre Direct Advanced Lync System. Can anyone help me choose between the DMA-1240 amplifier and the DMA-1275 amplifier? The big difference is how...

Hello, Receiver: Denon x6700h LR: Monitor Audio Silver 500's (90 db sens., 8 ohms, 250W RMS power handling) C: Monitor Audio Silver C350 (90 db sens., 8 ohms, 200W RMS power handling) for my centre channel. Surrounds: Monitor audio FX (87 db sens, 8 ohms, 85W power handling) [I am considering...

I decided to register here to discuss the Purifi modules. I recently purchased a stock Purifi stereo amp from VTV. It was noticeably better than every other class-D I've heard before. However it suffered from a really bad mid-range: blurry and artificial-sounding. Just awful. I almost returned...

As we all know, headphones, similarly as speakers, have non-linear and frequency dependent impedance. This non-linear impedance creates a divider with headphone amplifier output impedance, so the distortion measured at headphone amplifier output (behind its intrinsic output impedance) would...

I’m looking for a black Topping A90, pm me your offers, thanks! (I’ll be providing a US shipping address)

I'm just curious if anyone has measurements/a performance analysis of the following: https://www.aiyima.com/products/amplifier-aiyima-a07-tpa3255-2-0-channel-300wx2-hifi I'm quite tempted to purchase one as I've heard good things about the TPA325x series of amplifier chips, and I like...

I wanted to compare amplifiers measured elsewhere to the ASR standard measurements: SINAD at 5W in 4 ohms, and power at 1% THD+N in 4 ohms. So I chose some amplifiers that interested me more (let me know if you wish I can add more), read their graphs, converted to SINAD, color coded and created...

I just bough a pair of micca Mb42x to use at my desk and play music in that room, It was caught small about 12 x 6 and my only plans of expansion would be to porbably get a Sub next year. I was going to buy a lepai 2020 but i have seen many reviews trashing it. Would this be suitable...

I have asked to Amir what would be the ending SINAD when pairing the new Denon 3700H with a purifi amp. Please find below its disappointing answer: Well, I tried to test this scenario but failed completely. :( Hooking up the output of 3700 to Purifi using RCA to XLR adapter generated worse...

This thread is being created for the purpose of rambling on about vintage and retro audio - with a hope that the significance and lasting power of various innovations and technologies related to high fidelity audio will be included. I expect the discussion to be random thoughts on the subject...

I will set-up a mixed HC/HIFi 5.1 system based on a Preamp processor (either an Emotiva XMC-2 or an Anthem AVM 60) and a mix of class D amp from HYPEX (center, surround & zone 2) or Purifi (L,R). They will power Dali Rubicon LCR as front loudspeakers (Sensitivity 89bB). A Rel T9i will be used as...

I'm considering converting a spare pair of passive speakers I own into active wireless ones with the following: https://audioxpress.com/article/you-can-diy-a-class-d-hat-for-raspberry-pi?fbclid=IwAR04o_Ssnz5SNbwmc8fs6dWUoDFsAzqphSQSpB3Rp7ReHenX92iYnL-a8CA I figure a couple of enclosures...

Hello everyone, I am new to the forum and first of all I would like to thank Amirm and all forum members for the many measurements and discussions I have read in the last 3-4 weeks since I got to know the forum. I came to the forum because I am just saying goodbye to my hifi system and switching...

Hi there, this is my first post and I apologies in advance in case my question makes no sense because I confess I know nothing about electronics and I'm quite confused with terms like "input sensitivity" "output/input impedance" "Vrms" and "mV" Now, my question is how to integrate my Violetric...

Hi everyone, I have been reading reviews in this forum and find them very helpful. Normally the available information on audio subject available online is enough for me to come to a decision what to buy, but this time I am a bit overwhelmed by the choices. My situation: I own a few headphones...

Hello! I have two B&W 684S2 speakers! I want to have a small amplifier. Can you recommend any of these to my speakers? NAD Amp 1 Yamaha WXA-50 Heos AMP HS2 or should I have another one? In that case what should I have? thanks in advance! br, Adam, Sweden

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...