Hi, I started the following thread about Topping A30 & HD 600: https://www.head-fi.org/threads/topping-a30-sennheiser-hd-600.876411 I used online headphone power calculators and as for the required power (mW) - everything is OK. But I cannot find info about Voltage (volts RMS) and Current...

OK, I also checked the following Headphone Power Calculators: http://www.digizoid.com/headphones-power.html https://www.headphonesty.com/headphone-power-calculator ... and as for the required power (mW) - everything is OK. But I cannot find info about Voltage (volts RMS) and Current (millamps...

Hmm, I'm not sure if I understood you well... is this question is related to impedance spikes in the lower frequencies? Or settings on headphone AMP? As for Topping A30 + HD 600, I guess that I will need to set the power switch to "Hi", and not sure about the gain selector but first I would...

What about impedance spikes in the lower frequencies? They go up to 560 Ω - does this mean that A30 will have trouble to handle the lower frequencies? Or maybe I completely misunderstand that :)

It is interesting that on their website there is this: ... but also on their website they recommend AliExpress stores that specified the following Recommended Headphone Maximum Impedances: HIFI College Store and Shenzhenaudio Store: 251-300 Ohm Aoshida-HIFI Audio Store: 101-150 Ohm :thinking:

No, I plan to use only Headphone AMP (because of this).

Hi, First of all - sorry form my bad English, I hope that you will be able to understand me. :) I want to buy Sennheiser HD 600 headphones. Also, I'm interested in Topping A30 but I'm not sure how HD 600 will work with it. The reason I'm considering buying Topping A30 is because in many...

Hi, This forum has already helped me a lot to better understand headphones, amplifiers, audiophile equipment... but there's still a lot to learn :)