+ Дата публикации: - 10.09.2017 - 595 Просмотров
Bottlehead's $549 Paramour 2A3 Monoblock Amplifier Kits - Enjoy the Music. Bottlehead Quicksand Battery Powered Amplifier Kit A great starter amp kit with plenty of room to build upon.
Please update your browser
Of course, the signature can change with a simple swap of tubes (valves). The Cleartop RCA 12AU7 I bought makes the sound a bit leaner and brighter, but does so at the expense of ambience and space within the music so it’s all a matter of personal preference. I guess the key here is don’t decide on the Crack because of a sound signature because that’s adjustable with simple tube swaps.
This is the smile-inducing part of the Crack’s sound. I don’t feel like the Crack dramatically enlarges the soundstage of the HD650s, but it’s placement and layering of sound is flat-out holographic. Individual instruments and sounds are perfectly separated and spaced around the soundstage to a degree that’s surprising at times and almost enough to make you look over your shoulder or second-guess if you’re alone in the room! All of this adds up to a sound that’s fun, addictive and realistic. It’s probably not an amp for people who like to dissect music and analyse recordings, but it is definitely an amp for anyone wants to really enjoy their music in a way they might not have previously.
The Crack brings music to life in all it’s amalgamated glory. The music is presented as a whole, magical soundscape, not a series of analytically correct, but unrelated parts. It’s been quite a revelation to me and has me subscribed to the benefits of high quality amplification.
Audio reviews for music lovers
The design of the Crack results in a high output impedance. In layman’s terms, this means that it doesn’t work particularly well with low impedance headphones.
Most headphones on the market are low impedance (<100 ohms) which means the Crack is not a good match for the majority of headphones on the market. Not that it sounds awful with these cans – it actually still sounds quite good with my 70 ohm Ultrasone HFI-680s, but it’s not ideal because the amp doesn’t have as much control over the movement of the drivers when the headphone’s impedance is too low. An amplifier relies on impedance to control and limit the movement of the headphone drivers.
If the headphone impedance is less than or close to the amplifier output impedance, it’s ability to stop (or dampen) the movement of the driver is reduced and can result in lower sound quality. Where the Crack really excels is with 250 ohm and and with 300 ohm Sennheisers (among other options). It consistently receives rave reviews when paired with HD650s, HD800s, T1s, DT880s, etc.
If you own or are thinking about owning some high impedance headphones and want to get the most out of them without spending $1000+ on an amplifier, have a serious think about the Bottlehead Crack. It’s easy to build (and fun), and will easily give you the best headphone experience that $350 can buy! Add to that the ability to tinker, upgrade, swap tubes and generally customise your amplifier and it’s an amazing bit of kit – get you one! Thanks for the write up of the Bottlehead Crack. I was considering it when researching amps for my HD650. But in the end thought I’d start with a Little Dot MkIII.
The HD650 certainly pairs well with tube amps. I’ve heard it with a Violectric V100, and found that a bit too clinical compared to the tube amps I tried (LD MkIII, ALO Pan Am, Schiit Valhalla). Maybe one day when I build up the courage to build my own amp, I might take this on. I can recommend it for a fun pastime and also will give great sound. Can’t comment on the performance compared to the Little Dot, but it’s always fun to try something new. Good review, I am thinking of getting this for my HD650.
Vacuum tubes equipment reviews
Did you buy one with Speedball upgrade? Is the 240V transformer separate unit? You surely done a nice job with the wooden shell, I like the rustic colour, did you stain it using normal wood stain? I am surely interested to get one of this just waiting for another person to join to save additional cost. I didn’t get the Speedball. There is a really slight background hum that’s really only audible when you’re listening for it and I think adding the Speedball might rectify this – I plan to get it in the future, but was interested in getting the stock kit and getting to know it before upgrading.
The 240V transformer is a different version of the normal unit they put into the kit – i. It’s built into the kit (and looks exactly the same as the 110V one from what I can tell) – it’s the dark grey cube at the back of the amp with the curved metal top. Thanks for the compliment on the wood finish. I used Black Japan stain and put it on lightly and irregularly.
Making Music Sing: The quest for a Hi-Fi headphone system
I also sanded it a little irregularly in between staining and varnishing (and in between coats of varnish). Good idea on a group buy. Can anyone recommend a good DAC to go along with my Crack w/speedball? I was thinking the Schitt Bifrost. I have heard good things about the Bifrost, but haven’t used it myself.
Your browser is a little outdated For maximum enjoyment of Massdrop, please download one of the following browsers
I’m really happy with my Audio-gd NFB-5. Which is a DAC/amp combo (selectable line-out/HP out allows easy switching between the 5. Solid state amp or the Crack). Audio-gd make dedicated amps too so you could check them out. The only reason i ended up here was that bottleneck have a offer on this weekend buy it & get the speed ball free and if you ask me that is a real bargain.
Making Music Sing: The quest for a Hi-Fi headphone system
Now just needed some more feedback on it and your writeup made my mind up so thanks to you and there offer i have got one but the wife is going to be a little pissed with me mind you. I was looking at the crack a while back last year & after spending weeks researching valve amps i was going to buy it but due to work never go t round to it until i received an email from bottlehead regarding there offer and guess what i could not say no who wouldn’t. There going to power my 650’s with high end rme converter 32 bit 192 khz.
I have no doubt you’ll love the pairing with the HD650s. Did you get the early offer with the included tubes? Not sure yet but i sure did order early so i will have to wait and see. Am planning to have this kit also but am here in Riyadh. Just worried I can’t finish the assembly coz’ of missing parts. Meaning everything such as the board, transformer, tubes, wooden box, etc. And all you have to do is just solder, etc?. They ship everything you need. The only issue you could strike is if you accidentally damage a component (like I did) and have to get another one.
I imagine Bottlehead would help you out with replacement parts if needed or you can source them locally. This is only an issue if you damage something – otherwise they provide everything you need (except solder and tools). Time ago I built the Bottlehead Crack amplifier and reviewed both the build process and the resulting sound. They’re some old (but good) Tara Labs cables from my old speaker / car audio setup (can’t remember which).
In my headphone and speaker setups. It has paired beautifully with both of the amps I have tried (Bottlehead Crack and Bottlehead S. Review coming soon) and with all the headphones I’ve tried.
Some of you will have read my review of the assembly and performance of the Bottlehead Crack DIY tube amplifer and you might have also read my assembly review of the Bottlehead S. You state “I found that the combination of the Mullard 6080WA and RCA Cleartop 12AU7 tubes provide the sweetest sound” (aren’t these both the output? But later “The Cleartop RCA 12AU7 I bought makes the sound a bit leaner and brighter, but does so at the expense of ambience and space within the music so it’s all a matter of personal preference.
Is it that you accept (prefer) the loss of ambiance and space. The 12AU7 is essentially an input tube while the 6080 controls the output. The reason I chose less ambience from the RCA Cleartop is because it was nicely balanced by the Mullard 6080WA. Mullards were too much of a good thing and got a bit thick sounding at times, especially with warmer headphones (e. The Cleartop’s clarity and the Mullard’s warmth and ambience made a perfect pair. Thanks for asking to clarify!
(The kit arrived the day I left) I can’t wait to get home and begin construction. It will be difficult not to rush as I’m so keen to hear it. Take your time with the build, enjoy the process (and the finished product) and check out the Head-Fi and Bottlehead forums if you need any help. BOTTLEHEAD CRACKDedicated headphone dot mk iii vs bottlehead appearsspan classfspan classnobr sep. Audiopage - bottlehead speedball functions as it audiobottlehead crack bunch. Different animalslittle dot mk iii vs pot andbottlehead. Compared them with photos and up with this.