MASantos

ti5002000 thank you for your offer, but i prefer to build the smd version with available parts. Building with obsolete parts is risky. Chris, YGPM.

Hello guys, long time since I posted around here, hope everyone is doing well. I am looking into the dynalo mk2 for a new headphone amp. I've read around the thread and still have a few doubts. 1- I've seen some references to a BOM for the Kerry dynalo mini board and also for the"normal" SMD version but couldn't find them anywhere. Could someone point me out where to find them? 2- The GRLV seems to be the go to choice for the standard build. It does have some choices regarding output voltage and configuration, but I couldn't find it in the grvl thread. 3- Has anyone compared the bjt input IC with matched jfet quad input? I have plenty jfets to use, any parts changes needed to use them instead of the THAT340? 4- I really like the small for factor of the mini board with all the components in one board. I'll will be driving sennheiser hd650 (6xx actually), would the extra output capability of the "regular" board be an advantage here? I've seen some references of running very warm, should this pose a problem in the long run? 5- I'll try to ask in the FS forum if anyone has spare boards for sale, if I don't have luck which gerbers should I use to order boards? There are many versions of the GRLV and dynalo mk2. Sorry for all the questions I haven't been around much and didn't follow the development closely.

Is that price correct? 21euro/24USD? The enclosure alone is a steal at that price!

Hello Justin, will there be a matching upgraded power supply as in the original?

Cool! you might want to contact a few speacialized stores to get their opinion on brands and whatnot but overall go for the one with the best temperature and humidity control and anti vibration circuits. And I would recommend a unit with a single temperature setting dialled for whites. To serve a red it is only a matter of taking it out a few minutes earlier and letting it warm a bit. No harm whatsoever in storing them below serving temperature. Multi zone units are much more expensive and there will always be interaction between the 2 sections.

Are you looking to have wine and beer at the right temperature for daily drinking or do you plan to use the fridge to age wine? This is a most important question, wine ageing fridges are usually built to much higher standards and feature better anti vibration hardware (vibration is one of the main problems of cheap wine fridges and it will ruin the wines). If you are looking for a frige to have your day to day drinks at right temp you might want to look for smaller unit, say 40-60 bottles with better built quality such as the one Nate pointed out.

I don't think that sennheiser will be dropping the HD600/650 from the lineup. This might be a very smart move from them to get quite a few units to the market and increase brand recognition with millennials and get some of the market away from beats. I bought a pair, I sold my hd650 long time ago and this was a nice opportunity to get a new pair at a great price. Now I just need to build a new amp for them...

I know, but that meant a larger back panel which wouldn't fit my target enclosure.

They are indeed neutrik REan RCAs.

The ones supporting the front panel? They are an extra from hifi2000 to make the front panel without visible mounting holes.

Well I haven't tested the preamp alone. I replaced a Rega Brio integrated with the salas phono stage, BA3 pre and F4 power amps. Overall the improvement was very impressive. Much better control of the low end and also a wider soundstage with more "air". Overall the sound is quite "musical, but not the most detailed.( the ba3 is not know for being the most detailed amplifier out there.). When I connect a digital source there is also some improvement so I can say the the phono stage is responsible for some of that nice sound! Here are the latest pics: Dirty psu section with line filter. Dual mono PSU umbilical. The black knob works as on/off switch, input selection and volume control. When turned on there are 2 numeric led displays on behind the black acrylic for volume display. 64 steps Control board for the attenuator/source selector. Remote control receiver on the front side, Cat5 wiring for signal. Salas SSLV regulators, BA3 front end at 30V and relaixed passive attenuator. using vishay self resistors. The control board for the attenuator is in the front panel and the power relay/5V control voltage section pcb is in the psu case. 8 wire umbilical carries control wiring and dual mono DC for the regulators. "gain" is the output from the BA3 preamp, "0db" does not have any active circuitry in the signal, so it is a passive preamp output, "loop" simply outputs the selected source, so it is just a source selector. The two AC female connectors are controlled by the preamp on/off relay switch (10A/250V), so when I turn the preamp on I can turn 2 other devices at the same time. ATM using one of them for the phono stage, might feed a DAC in the future with the other one. Preamp PSU. System in my DIY oak rack (solid oak kitchen countertop cut to size) A small video of the system playing, you can see the F4 power amplifier behind the left speaker. It will eventually be placed in the large lower opening in the rack, but I need to build ventilator to extract all the heat (200W) from those heatsinks. Some sort of undershelf with 140mm computer fans is on the way. https://youtu.be/OpMUCAIiMUY

Long time since I posted around here but I thought I'd come by and show my latest DIY projects: First Watt F4 running on +- 32V At the moment I'm using a Millett Hibrid as preamp until I finish th BA3FE for preamp duties. Salas Folded Phono Stage, waiting for the front and back panels to arive from milling for final assembly. PSU for preamp

I have pair of shure e4c, which I quite like and would only change for a pair of customs, but iems for extended home listening are not what I'm looking for.

I actually gave getting a pair of customs a serious thought, but I can't justify the investment atm.

Hello everyone, Long time since I last posted, but I'm in need of a pair of closed headphones and what a better place to ask around and see how everyone is doing. So I had a son last year and listening to the speaker rig or akg 701 at night with the wife sitting next to me is pretty much impossible. A pair of closed headphones must be bought to maintain the levels of sanity in between diaper changes. Tyll highly recommends the nad viso and some other focal ones, but I remembered a couple of years ago the thunder pants were very well spoken of. Is smeggy still making these? Any other closed cans I should consider? I'd like to keep the budget below 500$. Amp ATM is a first GB millett hybrid with discrete buffer, but am considering a ckk3 or maybe a torpedo. Manuel

Agree as well, can be built under 200$ and sounds great! Makes a great preamp too!

Anyone knows if these new players will allow the streaming of internet radio? If not it is the only thing missing to make it perfect!

Hey guys, I have 2 of picaudio's teflon stax jacks I will not use up for grabs. Pm me if interested.

I have two 5 pin jacks I won't be using anymore, so if someone would like to buy them, please let me know.

Shouldn't the new trident regulators remove much of the need for super high quality power supply? This might be more of a change with older versions of the buffalo though!

Not sure yet, I'm leaning towards a mix of them, cascoded input, 25v primaries(34v secondaries) and only two output devices per channel.This should give me about 70W into 6 ohm, which is plenty for my rega rs3's. It will be next winter only though, as I don't have a need for a heater anymore

The K&K looks like a nice preamp! I didn't know them. I'll be looking for a tube preamp in the near future to use with Nelson Pass' F5 turbo which was released yesterday. This might be a good option.

Wire some large conducting rubber pads to the output and you'll have an high end defibrillator!

The battery could work but if you want any reasonable playing time between charges you would have to get a somewhat large one which not only increases price but also footprint. If you're looking for something more elaborate than a lm338 based PS, you can also check the placid from twistedpearaudio which has been put on par with the O11. I'm not sure of it's current capabilities though, but it comes as a kit and they also sell the transformer, so you could save on shipping costs.

Got the connectors today! Thanks Rodrigo!