Friday, March 20, 2026

Behringer JT-4000M Synthesizer

I have been feeling the need to get back into making some music again, in that respect I regret selling a couple of pieces of kit many years ago, a couple of Korg Kaossilator units, but there really is no point in this regret thing, move on and either buy them again or buy something new. I still have my Korg Karma synthesizer and my Roland Piano, but I wanted something to play with while sat on my arse. I know, I can play on my keyboards sat down, but there was an urge to replicate the portability of the Kaossilator days.

This wasn't the solution :


The Behringer JT-4000M seemed to be a good idea at the time, and for a few hours I did have some fun noodling around and learning how to use it, but, despite all of the amazing Behringer promotional videos on youtube, I have to stand up and disagree with how useful this thing is, and I will tell you why.

Great sounds come out of this, 32 programs/voices and they can be adjusted, filtered and played with, but the reality is that because this is a very limited synthesizer, only one voice can be played at a time, with four notes played, not polyphonic, paraphonic, a term I only learned since buying this. It was a cheap unit, a hundred bucks including taxes and shipping, and I sort of knew there was a bit of deception going on with the Behringer videos, yet my need to have something exceeded logic.

The Behringer claim in videos online, touting "all sounds from the JT-4000 or JT-4000M used in the making of this tune" are correct, however, what they avoid to show in the videos is that quite a bit of peripheral equipment is also used, I would guess a MIDI keyboard, an effects processor and a DAW at the very least. 

This thing called a DAW is a Digital Audio Workstation which is a software application used for recording, editing, and producing audio files. Think of it as a professional recording studio condensed into a single computer program and the tunes "demonstrating" the capabilities of the JT-4000M use a DAW to construct multiple tracks.

Think of the JT-4000M as a potato, and the software is used to play multiple potatoes via MIDI or even layer multiple audio tracks (not MIDI) mixdowns from a single potato and Behringer have had an audio engineer use the maximum capabilities of the DAW (not the JT-4000M) and publish the results as a promotional video on youtube to sell their product, at the end of the day that is what they need to do, sell potatoes to idiots like me.

The silver lining in all this is that I have reinstalled Ableton Live 12 Lite on my main computer and I will attempt to learn something in the next few months, however, if I do buy another piece of hardware I will be avoiding paraphonic synthesizers in the future and spend a little more cash on a polyphonic, 4 voice and a drum channel unit like the Roland MC-101. As you could see in the last blog, the JT-4000M was included in my "free" list so in my mind at least, no harm has been done and I will see how much I can flog it for to raise cash for more things I don't really need.

Onward and downward!

Thursday, March 19, 2026

The list of free...

Ok, as promised and as of March 19th, 2026 here is the list of free stuff from my efforts in late 2025 and 2026, this is why I am still happy with this hobby and all of this stuff is still in my possession as of today, but I have plans to build out a couple of the cases with the two remaining TB360 BTC PRO motherboards and some of the other free components, basically selling stuff I don't really want to buy new stuff I don't really want and continue to maintain the status quo of it being a free hobby.

The list : 

CORSAIR CARBIDE 270R CASE

COOLER MASTER HAF RC-912 CASE

HP SFF ELITE 8200 COMPUTER WITH 8GB DDR3

MICRON 8GB PC4-2133

SK HYNIX 2X4GB DDR4 PC4-2400T X2

G-SKILL AEGIS F4-2400C15D-8GIS 4GB DDR4

VENGEANCE LPX CMK8GX4M1A2400C14R 8GB DDR4

KINGSTON 2X8GB 2400

16GB DDR3 FROM ANTEC MACHINE

24GB DDR3 RAM 6x4GB

INTEL I3-8300

INTEL G4930T REMOVED FROM SOLD TB360-BTC PRO

INTEL G4930T REMOVED FROM SOLD TB360-BTC PRO

INTEL I3-2120

BIOSTAR TB360-BTC PRO WITH INTEL G4930T

BIOSTAR TB360-BTC PRO WITH INTEL G4930T

ASUS MOTHERBOARD B85M I5-4440

ASUS P8H61-M LE/CSM WITH I5-2400 CPU + COOLER X2

ASUS M5A99X WITH FX8350 AND COOLER

GATEWAY CBO311-1H-C01N 11.6" HD CELERON N4500

SANDISK 240GB SSD

SANDISK 480GB SSD

SANDISK 960GB SSD

NOCTUA NF-P12 WITH RHEOSTAT 3 PIN X2

NOCTUA NF-P14s REDUX 1500 PWM 4 PIN

NOCTUA NF-P12 REDUX 1300 PWM 4 PIN X6

ARTIC P14 MAX PWM 4 PIN X2

CHROMAX (NOCTUA) NF-A8 BLACK SWAP PWM 4 PIN

CHROMAX (NOCTUA) NF-A9x BLACK SWAP PWM 4 PIN X2

MINING RIG MOTHERBOARD AND BITMAIN POWER SUPPLY

GIGABYTE NVIDIA GTX 1660 TI OC 6GB

GIGABYTE NVIDIA GTX 1660 TI OC 6GB

MSI NVIDIA GTX 1660 TI VENTUS 6GB OC

MSI NVIDIA GTX 1660 TI VENTUS 6GB OC

MSI NVIDIA GTX 1660 TI VENTUS 6GB OC

LENOVO T450 LAPTOP WITH ADAPTER

LENOVO T450 LAPTOP WITH ADAPTER

LENOVO T450 LAPTOP WITH ADAPTER

ASUS H270 PLUS MOTHERBOARD I5-7500 AND 4GB DDR4

ASUS P5KC WITH QUAD Q6600 CPU AND 4x1GB DDR2

ADATA 120GB SSD X 2

SILVERSTONE SG04, P8H67-M EVO, I5-2500K, 16GB DDR3, SOUNDCARD, AIO

BEHRINGER JT-4000M SYNTH

You will notice at the end there something that is not a computer part, but I've been fiscally responsible for all my purchases over the last three months. I will do a short review of that next.

Three week mad one

I've already blogged about the fate of the first TB360-BTC PRO motherboards, set up as an i3-9100F 1080P gaming machine with the lovely white case and ASUS GTX 1060 that I'd had for a week, there was good profit there and my purchase spreadsheet was looking a lot less lobsided with the $300 cash coming into the hobby. This encouraged me to go on a three week selling spree with a goal to pay for everything with profits and see what was left "free" and of course, give myself encouragement to buy more.

A local business, Lighthouse Brewing, unfortunately went out of business after 27 years and I bought six laptops off them for $20 a piece, it gave us a reason to go down to Esquimalt a couple of times and enjoy beers at the other brewery, Driftwood. The laptops from Lighthouse were a couple of 15.6" Acer and four Lenovo T450.


This is one of the Acers after I cleaned it up, all six of the laptops need a lot of cleaning as they have been used in the industrial area of the brewery, the two 15.6" laptops cleaned up surprisingly well and sold quite quickly on Marketplace and between the two of them I made $100 profit which went into the spreadsheet, before that I had sold the original T450 for $100 profit, everything helping towards my goal of breaking even.


I should explain that, when Lighthouse announced their "last day and yard sale" they had a bunch of laptops and computers for $20 a piece and I had bought the first T450 and a HP Elite 8200. That was it and I was kicking myself for not buying them all once I realised what was in them. There was a second chance a week or so later and I went back and bought five more laptops, two Acer and three T450.

In the interim I sold many things, boxes of AIO, radiators, 3 pin fans, a toughbook, some old CPUs and RAM for gold recovery and what I would call a "Frankenstein" computer (which I will blog about soon if I remember) and by the middle of March my books were balanced, even the mining rig and 5 graphics cards were paid for and I had a big list of stuff that had turned out free, which I will blog about immediately after this.

It has been a mad, mad, mad three weeks.

Wednesday, March 4, 2026

Left Holding the bag.

The purchase of the large mining rig with the five graphics cards was a smart move, however, there were components in there that are really not useful for those that do not intend to do any mining, and the state of the crypto mining business indicates that a growing number of hobby miners are throwing in the towel and discarding their equipment, as quickly as possible.

I have already scrapped the large metal chassis that came with the unit, I could think of no circumstance where it would be useful, I removed the power supply, the industrial fans and the motherboard and took the case over to the local recyclers and threw it into the scrap metal skip, at least that part of the adventure is over.

We should discuss this motherboard :

There is an established order in the home computer building world, motherboards have been standardized over the last thirty years and fit into computer cases with a set pattern of screws and a backplane of outputs that use an IO plate within those cases. This mining motherboard has been created to ignore most of the established criteria, it is a niche monster and custom made to serve a single purpose, to run a mining operating system like HiveOS and support up to eight GPU units in the "riserless" PCIe x16 slots. The motherboard does not even have standard power requirements, hence a speciality unit is required to power it and all those power hungry graphics cards.

The Motherboard is a BTC65-V1.01 8x PCIe-16 and has 8 Fan Headers, 4GB RAM and a 64GB mSATA SSD with HiveOS installed. Left to right you can see the CMOS battery, then the mSATA solid state drive, chipset and the RAM socket and the CPU is under the heatsink, fan assembly in the middle. A normal ATX motherboard would be about 12 inches long, to fit in a desktop or tower case, this motherboard is 21.65 inches in length and of course, would only fit in a custom case (like the one I scrapped) and even though this is a "modern" motherboard, built in the last four years or so, the underlying technology for the CPU is well over a decade old.

I will not be too technical, because I just assemble computers, but the CPU is probably 2nd Generation Intel from back in the Sandy Bridge days, now I am not knocking that technology, I have a lot of respect for Sandy Bridge, Ivy Bridge and Haswell processors, but the form factor of this mining board and the underlying technology mean that in "modern times" it has limited useful application. 

In that respect, for this piece of the mining chassis, I am left holding the bag on this motherboard, I have no use for it, it is highly unlikely I can sell it on marketplace and the only viable items are the mSATA solid state drive and the 4GB of RAM, which I may use in one of my industrial computers to create a home lab or a media server. 

I may attach the motherboard to my garage wall as a piece of artwork, it will serve to remind me that when the music stops there are always less chairs to sit on.