New streamer

@mclinnguy

Interesting, I never knew about that. So once those are installed one wouldn’t need to turn up the volume in order to flatten out the curve, as typically humans have to in order to increase lower frequencies to the same level as midrange. Thus the invention of the loudness control (Mcintosh). So you enjoy your hifi at lower volumes than those without hearing aids.

interesting observation. Not sure. I have only not had loudness control for the last 6 weeks with the purchase of my Rogue. Have been listening at lower volume since its install, but I chalked that up to the quality of sound. I do remember thinking recently, sounds great at low volume… why did I ever need loudness control…

I would think they had the same phenomenon as the human ear, but if so, at what volume would they be flat? My guess is at a lower volume than the human ear. 

I would think it is hard to determine when it is flat, if it ever is, as testing us to see where that might occur damages the test subjects ears, as it is north of 120db. Point is the louder the music the flatter the curve, and the more perception that bass is louder- graph below at the link provided bottom shows this:

Interpretation: looking at the bottom line, at 0 db a 1000 hz signal is barely perceptible to the (normal) human ear, but at 80hz that would need to increase to 40db for it to "sound" just as loud, and a low bass signal of 40 hz would need to be output at 60db to be perceived to be as loud.

equal loudness contour

The louder the flatter the curve becomes, and if one listens at 100db the line is reasonably flat- which makes music sound better, but more than 15 minutes of this (per week) and there is risk of hearing loss.

Quick post on Aurender warranty transfer. While the warranty does transfer, unless the purchaser of the used Aurender can obtain the original sales receipt, the warranty start date is the date of manufacture. Per Aurender support:

The warranty for the N150 is valid for two years from the initial purchase date or the date of manufacture. To ensure that the warranty is properly transferred to you, it would be beneficial if you could obtain a copy of the original purchase receipt from The Music Room. This will help in verifying the remaining warranty period.

So if you are selling and advertising a transferable warranty, you would need to provide a copy of your original receipt to the buyer. 

@signaforce There appears to be conflicting info coming from Aurender. I was considering a used N150 from a fellow audiogoner. I wrote Aurender and they wrote back and told me it is not transferable. If your version is the correct version, thanks for clarifying.

The following is the info from Aurender from 6 days ago:

You are correct that we offer a full 2-year manufacturer’s warranty for all Aurender products. The warranty is non-transferrable. However, all Aurender owners get free remote support assistance, regardless if they purchased the product new or used, from an authorized dealer or from a friend. This is found inside our Conductor app under: settings/help/send remote support email.

@12many 

Very weird. I was unable to get the original receipt so asked Aurender to provide manufacture date. Just received this from them. 

“According to our database, your unit was shipped to the US on September 9th, 2022. Based on this shipping date, your warranty is valid for two years from that date, ensuring coverage until September 9th, 2024.”

I have no idea why… the only thing I can think of is I bought it from an authorized dealer.