Yamaha CS70M Retro Fit

If you’ve been following the blog over the last months you’ll know that we organised a group buy of Kenton Retro Fits for the CS70. These had been long out of production but Kenton told us that if we had enough orders they would make a new design exclusively for us. So here it is, the fruits of our labour, a new Kenton retro kit fitted and working on a clients CS70M.


04 2010

New Items for sale

Quasimidi Cyber-6 and Soltron SM100

Casio CZ-5000

Casio FZ-1

Casio CZ-1000

Sequential Circuits Prophet 2000

Ensoniq ESQ1

Here’s some videos of some new items that we have for sale, click the for sale link above for prices.


03 2010

Roland TR-606 [SOLD] Korg Poly 800 [SOLD]

A couple more items we have for sale, this time a recently refurbished Roland TR-606 and a Korg Poly 800. Click here to go direct to the For Sale page.

Update: Everything sold!


02 2010

A few items for sale

In the near future we will open a web shop, but to get things rolling here’s a quick demonstration of a few items we are selling, you can find prices (along with some other pieces we have for sale) by following the “for sale” link at the top of this page.


02 2010

Roland TR-808 Midi Kit

Here’s another familier job, this time it’s fitting a midi kit into a Roland TR-808. As we did before, the midi kit is fitted internally and a new socket is placed where the din sync socket used to be. What this means is that cosmetically nothing is changed on the machine. The new socket doubles as din sync as well as midi. The new switch has three positions instead of two. Operation is the same except when the switch is in the middle position midi is activated. You can play all the drums from a standard midi keyboard with a special midi/sync cable (comes with the kit)

Here’s a video of the completed job


01 2010


A new machine arrived for the studio. This time we added an ARP Odyssey MK II to the collection. It’s not clear if we will keep or sell this unit yet. Functionally it’s in pretty good shape, theres a broken (but glued back together) key. We may have some spares, I’ll have to check this out when i get a spare moment. Soundwise it sounds lovely, you can’t beat a nice slab of analog goodness. We now have all three variations of the Odyssey in the collection. If we decide to put one up for sale we’ll mention it here first of course.

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01 2010

Marion Prosynth, Sequential Circuits Prophet 2000 and a Yamaha TX7

We hope you all had a nice holiday, we all had a much needed break here at Analog Sweden. Unfortunately the weather is quite cold here at the moment, but hey we are in Sweden so what should we expect in the winter months. So we have a mixed bag to report on today, some analog, some digital and some digital with analog filters. Quite a mixed bunch.

First up is a stack of Marion Pro Synths, these were designed by Tom Oberheim and the core technology is based very much around his matrix 1000 synths. This are a little better though since you get a nice large LCD for editing. These units are NOS and had been sitting so long that i had to replace all the batteries, originally they were hardwired, but i figured to place holders in there so that the next time the battery needs replacing its a simple job that doesn’t involve any soldering.

Next up was a Yamaha TX7, this needed some general maintenance, i suppose you all know this is basically a DX7 in a small form factor, the less said about this the better, unless we plan to change our name to Digital Sweden…not any time soon thankfully :-)

The current job on the workbench is a Sequential Circuits Prophet 2000. This is an old school sampler, but has nice curtis based analog filters. Three of the eight voices were dead, I’ve since repaired them and have now encountered another problem (this is often the case with vintage gear, fix one thing, find another problem) Thenewly discovered fault is with the sampling input, i can sample but it only samples silence. I’ve traced the input signal and so far I’ve confirmed it up to the input filters. that cuts out quite a large section of the circuit, but there’s still plenty more to debug and so that’s my current quest.

Well I guess its time to get back to it, keep your eyes open over the coming weeks since there will be some major changes around here, including some updates to the site and a new web shop where you’ll be able to browse the goodness we have for sale.


01 2010

Roland TB-303 Tact switch replacement

Another routine job of replacing the tact switches on a Roland TB-303. This is quite a comon fault, I suppose its due to the age of the machine and the fact that the tact switches don’t have any dust guards. Luckily we are still able to source spares (for now). I’m always happy to work on these machines since I love the TB-303. This particular model was one of the more squelchy ones, more so than the one we have in the studio. For those in the know, this is one of those that used the 945 transistors rather than the 536′s. From what i understand (through building a couple of x0xb0x’s at home) The 945 machines tend to have a more metalic resonance.  The one we have one in the studio uses the 536′s and it’s not quite as squelchy as this one.  I guess one day i’ll have to find a TB-303 for my home studio, but for now I’m quite happy with my x0x’s.

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12 2009