Sony PFRV1 Personal Field Speaker Headphones (Discontinued by Manufacturer)
| Brand | Sony |
| Model Name | PFR-V1 |
| Color | Silver |
| Form Factor | In Ear |
| Connectivity Technology | Wired |
About this item
- Rich sensational high quality sound
- Bass reflex duct for qualitative bass sound
- Full open sound without any ear pressure. Power up booster supplied
- 21mm Driver Unit. Magnetically shielded
- Heat-tempered aluminum finish. Connectivity Technology: Wired
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Product information
| Product Dimensions | 8.86 x 3.54 x 10.24 inches |
|---|---|
| Item Weight | 1.5 pounds |
| Manufacturer | Sony |
| ASIN | B0017IJALY |
| Item model number | PFRV1 |
| Customer Reviews |
3.8 out of 5 stars |
| Is Discontinued By Manufacturer | Yes |
| Date First Available | April 8, 2008 |
| Number Of Items | 1 |
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Product Description
Personal Field Speakers
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First impressions- what a complicated looking contraption. While they may feel and look a bit fragile at first, closer examination reveals that they are quite well made. Most critical pieces are made of aluminum or other metals. Plastic parts appear to be the kind of plastic that won't crack or wear over time from UV, heat or pressure. Others made mention about the cheap appearance of the cable. And while I've have seen better elsewhere it looks to be similar in material and strength to other Sony 'MDRs' that I've owned and never had problems with. Note that these headphones will probably be used indoors and are not meant for activity, commuting, on-the-go, etc. Between their lightness and well distributed support of weight these feel good on my head. The metal 'bass tubes' that go in (more like 'on') your ears do feel a bit odd at first, but no worse than IEMs which I have no problem with. You will definitely not suffer from 'ear sweat' with these- one of the main reasons why I looked at these in the first place.
Sonically these are just good all around. So you know where I am coming from other headsets I currently listen to are: Sennheiser HD-580, AKG K-1000, Klipsch X5, Sony MDR-EX300, and Sony MDR-EX51 (at work). Before these were even sold there was the inevitable comparison with the AKG K-1000s based on their similar design philosophy. But if you are looking for the so-called K-1000 killer/ replacement this is not it. They are in different classes- both in price and sound. The Sonys, while sounding much more open than IEMs and most other 'conventional' headphones, don't have that same airy almost speaker-like quality of the K-1000s. Somewhere in the middle. And while they don't have the superb bass extension of the better IEMs, they do sound warmer and much better for popular music than the AKGs. Again, somewhere in the middle. I listen to everything from contemporary Jazz to R&B/ Rap and I think these headphones cover that broad range perhaps better than 90% of the earspeakers out there. The little 'AAA' powered 'booster' seems sonically transparent, but it will make listening to notoriously low-volumed Sheffield recordings possible on something like an iPod/Pad. Otherwise you can run these headphones without that little device if you think it gets in the way either physically or sonically. For a little more boost, I also tried my own Altoids can-housed CMOY based on an OPA2134PA chip which definitely could drive these louder but sonically sounded similar to Sony's device. The Sony device is a good compromise- it's light and adds just enough 'oomph'.
Slight Mod: In some forums I've read that people found the metal bass tube to be a bit uncomfortable and some solutions were posted. The PFRV1s come with small foam 'socks' to put over the bass tubes to address this. One guy said he used a foam tie-clip microphone windscreen (sold at Radio Shack) so I thought I'd give that a try too. It works fantastic! With it these headsets feel more like a set of earbuds (think earphones 10 years ago before IEMs) and an unintended consequence is that the sound to me is a bit smoother in the upper midrange area and you do not lose much if any detail or soundstage. The overall sound is warmer and easier to listen to over longer periods of time- again without losing detail or depth.
To sum up, as I said in the beginning these headphones may not have the best detail, widest soundstage or bass extension as a few others. But I've yet to find a headphone anywhere near this price (as of this writing under two bills) that has all of these. And being somewhat sensitive to 'ear sweats' I am almost automatically limited to IEMs, AKG K-1000-type cans, or short listening sessions to something very comfortable like the Sennheiser HD6xx. These Sonys however seem to do everything well within reason. It's sort of like the BMW 335i or 550i of headphones. Now all I have to do is decide if I want a back-up set while they are still available.
Pros:
1. Neutral and transparent, occasionally the mids and highs have surprising separation and beauty. Concert-like soundstage like you are at a distance of the music, or like a good stereo setup. This front-facing soundstaging can be magical with certain songs, but for hard hitting electronic music it will feel like being ~50 feet away, good for most music, unacceptable for a few types of music like house trance, but the bass can be significantly improved with recabling or thicker extension cable, IMO.
2. Very innovative minimalistic design, very sturdy and light-weight, duralumin construction, glossy speaker exterior, feather-weight headband made of black mesh+leather (or fake leather). You can adjust the distance from top of the head to top of the ear, and the distance from top of the ear to the metal tubes that enter your ears. You must adjust both of these sliders on each ear for a comfortable fit. Easy to take off and put on once you have adjusted it properly. The only worrisome physical aspect is the exposed driver, which is only protected by a finger guard going across the top of the driver. A pinky or pencil could damage it, I will never use it in public for this reason alone.
3. Well-thought out accessories, bam-p1 headphone amp is decent quality and better than my ipod 5g, iriver h120, and cowon q5w internal amplifiers, bam-p1 adds depth and is neutral. Extension cable, mini-stereo to stereo adapter, foam for metal tubes (but makes bass fuzzy, I don't use), nice case with leather front top (or fake leather) with two-slot pouch and velcro on everything to tuck away items with ease, my 5.5" by 3.5" cowon q5w can fit inside the case with the headphones.
Cons:
1. The headphones are UGLY.
2. Absolutely no isolation from external noise, luckily it does aim sound only at your ears, and the sound will be quieter for others than for you, whereas some open headphones aim some sound away from your ears and is as loud for others as for you.
3. Inconvenient to take outside, it sounds so good I wish I could, but no isolation, fear of someone deliberately poking the exposed driver, and the ugly factor, prevent me from ever doing so.
4. The bass is not nearly as detailed as closed-back headphones, on some occasions the highs will pierce your ears, and the sound pressure can sometimes offend your ears and soundstage may seem incoherent. These three problems are toned down some with 50-100 hours of burn-in (LOW VOLUME ONLY), and recabling will do a much better job remedying all these issues (again, in my opinion, some others believe there is no audible difference in cables).
(Don't read this last con unless you want to hear my opinion of cables making a difference)
5. The stock cable is super-thin litz braid wire that has terrible electrical properties, it has very airy sound and is flexible and is light as a feather, but the bass is partly destroyed if using the stock cable but not using the extension cable, and ruined a lot more with the stock cable AND stock extension cable. Keeping stock cable and using a thicker gauge extension cable is highly recommended if you don't want to recable the headphones.
Having a soldering expert replace the stock cable is much preferable to doing it yourself unless you have much experience, and cable gauge will be limited to ~27 awg MAXIMUM per conductor if you want to fully insert the wires through the hole in the driver housing and metal curves located below the housing. If you recable with a heavy wire or use a heavy extension cable, I highly recommend you use some kind of shirt clip or the added weight will add pressure to the metal tubes poking at your ear canal. I wrapped a rubber hair band around the cable and a binder clip, completely removes weight of the wire. Another option to reduce weight is to pad the housing so that they apply horizontal weight on your cheekbones instead of the bass reflex ducts on your ear canal entrance.
And don't forget, ANY form of modification VOIDS YOUR WARRANTY. Allow the headphones to burn-in and make sure you see no defects, check the impedance of both drivers with a multimeter, if greater than 2-3% impedance between left and right channels, you may want to tell Sony it is an unacceptable variance and you need a replacement.




