My 8323's just arrived and I'm listening to Allman Brothers' Eat a Peach on CD. I don't often use headphones so I don't feel a large investment is in order for me, therefore for almost a decade now my reference headphones have been the Sony MDRV150 from Walmart at $19.90 which I picked up in rural Kansas en route years ago, and which have remained available until perhaps very recently (Wally's site reads not available at this time). These Monoprice 'phones definitely sound better than the Sony.
In the past I have owned Nakamichi SP-7, AKG 141(? 70's), and spent time with various Sennheisers, Sony's, the Grado SR60i, and the Stax Lambda Pro. The Stax are in a whole nother league, we'll ignore them. I preferred the AKG and Grado to the others. What I am hearing right now keeps distracting me - in a good way. The cheap Sony's employ a 30mm driver, the cheap Monoprice a 50mm one - that probably does a lot to make a difference in the bass I'm hearing which I didn't get from the Sony. I'm sure the closed back vs open matters also.
However, the 8323's are not at all dark-sounding. Wow, good dynamic in the snap of the drum solo on Mountain Jam, tom toms just right, and now the bass comes in articulate and defined, not muddy. These headphones sound damn good! They don't just sound good for the money, they simply sound very good. IMO, they play in the same league as any of the other phones I have mentioned - excepting the Stax.
The highs are a bit sibilant. On first listen, that is their most obvious weakness to me, and may not be a fair one given one digital source and just one CD. Sooo.....just popped in Bob James and David Sanborn's Double Vision, the top end is crisp and clean on this recording, with just a tad of sibilance with high volume/high frequency dynamics but I am listening louder than I should. I'm getting good resolution in the mids.
Mainly what I am getting is a very enjoyable listen. These phones have a startle factor in the dynamics that is MIA in the similarly priced Sony. It sounds like I spent more than a hundred bucks, maybe way more - I had been wanting to get the Grado 60's, which I've heard many times over the years, and my brother got a pair recently, but these sound every bit as good to my memory (a few weeks ago most recent). I'd have to get them side by side, but I believe these give them a run for the money and may well best them. Stoked to get this level of SQ on the cheap. They keep triggerng my startle reflex, and yes I did lower the volume a bit, earlier.
Under $30 delivered? This is known in cheapskateland as a no-brainer. They do fight well above their weight-class, and bottom feeders like me love that attribute. When you are lucky, you get what you pay for; when you are very lucky - once in a blue moon - you get more. Listening to Boston now and all I want is to have my piece of pie. Mmmm...tastes good.