product details
SEQ v4+ Enhanced LH Essential Kit
Product ID: K-SFE-01L
MIDIbox SEQ v4+ enhanced edition kit. LH case incl. rack kit (optional, needs 3U and 3mm of rack height), PCBs, UI parts, light|shields and L4 caps. Needs further parts to be completed.
Weight: 3300 grams
*Note that the 2023 SEQ v4+ kits ship without the LineRX PCB, which is not required for the SEQ v4+ build - for modular/eurorack integration we'd recommend our Eurorack Modules kit, which includes a line receiver*
*Note that the 2025 SEQ v4+ kit includes the required SD card connector/holder*
in stock
929.99 €
incl. VAT, excl. shipping
Products contained in this kit
SEQ v4+ LH JA Case (Blue/White)
C-SEQ-01L
"Left hand" SEQ v4+ case designed by Hallik Engineering. Fully painted with silkscreen labels. Includes milled display windows and blanking plate. Optionally rack mountable (needs rack kit).
219.98 €
incl. VAT, excl. shipping
SEQ v4+ Case fastening hardware
W-SEQ-01
SEQ v4+ hardware set: M3 screws and nuts, M3 5mm, 10mm and 20mm hex standoffs required for case installation of all PCBs in the midiphy SEQ v4+ cases.
16.98 €
incl. VAT, excl. shipping
SEQ v4+ LH JA Gate/FSW Cable
W-SEQ-03L
SEQ v4+ cable for left-handed cases. Connects footswitch/external gate input with the JA PCB, so that the sequencer can handle these external signals.
9.98 €
incl. VAT, excl. shipping
SEQ v4+ Rack Mount Kit
C-SEQ-02
SEQ v4+ rack mount kit. The 19 inch rack ears are milled for a perfect fit and are painted in the same color scheme as the SEQ v4+. Needs 136mm (3U and three millimeters) of rack height.
49.98 €
incl. VAT, excl. shipping
2x in kit
SEQv4+ ENC-PLATE PCB
P-SEQ-01
Stabilizes the Matias switches and also carries eight encoders with switch functions connected to the lemec board below. Two PCBs required per SEQ v4+.
27.99 €
incl. VAT, excl. shipping
SEQv4+ LE-MEC LH PCB
P-SEQ-02L
Left-hand v4+ user interface board with illuminated Matias and Apem (MEC) switches. SRIO DIN for button matrix and encoder scanning.
32.99 €
incl. VAT, excl. shipping
SEQv4+ LE-MEC RH PCB
P-SEQ-02R
Right-hand v4+ user interface board with illuminated Matias and Apem (MEC) switches, plus Beat LED. SRIO DIN for button matrix and encoder scanning, extra registers for activity matrix.
38.98 €
incl. VAT, excl. shipping
SEQv4+ JA PCB
P-SEQ-03
Jog/Activity Indicator board carrying the data jog wheel encoder, the new v4+ mode selector, additional MEC switches and two 8x8 mini LED activity matrices.
24.99 €
incl. VAT, excl. shipping
2x in kit
AL4002A OLED, 40x2 Characters, White
D-OLW-01
40x2 character OLED, white pixels, 3.3V supply, HD44780 compatible controller, parallel/SPI/I2C interfaces
69.98 €
incl. VAT, excl. shipping
2pcs LED Mini Matrix, 8x8, White
L-M-01
Common cathode, 20mm x 20mm. Used on the new JA PCB of the MIDIbox SEQ v4+, e.g. for track position indication. This set contains two pieces.
13.98 € (2 pieces)
incl. VAT, excl. shipping
7x in kit
5pcs cPixel RGB LEDs
L-RGB-03
5pcs cPixel common cathode RGB LEDs, ideal for backlighting Matias switches. Vac-packed for freshness! Solder at 300°C max.
2.49 € (5 pieces)
incl. VAT, excl. shipping
7x in kit
5pcs Matias Quiet Click Tactile Switch
S-MQC-01
The quiet, but still very tactile version of the Matias "click" switch. Highly recommended!
4.99 € (5 pieces)
incl. VAT, excl. shipping
7x in kit
5pcs L4 Superellipse DSA Keycap, EX Mount
T-CCT-L4
Custom design midiphy keycaps, made in the U.S.A. These keycaps have L4 superellipse background illumination bands and look awesome on all metal cases! Fit ALPS and Matias keyswitches.
12.98 € (5 pieces)
incl. VAT, excl. shipping
7x in kit
5pcs Light|Shield Standard
S-LIS-01
Light isolation for backlit Matias switches: ideal for fitting before keycaps are installed (pictured switch is not included)
2.99 € (5 pieces)
incl. VAT, excl. shipping
4x in kit
5pcs ALPS STEC12E08 encoders
E-STC-01
Our standard encoders. They have proven to be highly reliable after years of use. They include a pushbutton, e.g. for encoder input acceleration.
14.98 € (5 pieces)
incl. VAT, excl. shipping
4x in kit
5pcs K85 cap, black (for K88 knob)
T-K85-B
Black knob caps for the K88 knobs.
1.99 € (5 pieces)
incl. VAT, excl. shipping
4x in kit
5pcs K88 knobs, black, d-shaft
T-K88-B
Our recommended 6mm D-shaft encoder knobs for the Seq V4+ and the LoopA. Don't forget to order the K85 knob caps!
3.99 € (5 pieces)
incl. VAT, excl. shipping
Datawheel Knob DK30-105
T-KDW-01
Datawheel knob used in the MIDIbox Seq v4+. 6mm D-shaft mounting, 30mm outer diameter. Perfect for our standard encoders (E-STC-01).
6.99 €
incl. VAT, excl. shipping
4x in kit
10pcs LED White Clear 2x3x4mm
L-W-01
White, 2x3x4mm, ~2mA current using a 1k current limiting resistor @5V
2.49 € (10 pieces)
incl. VAT, excl. shipping
2x in kit
10pcs LED Color Mix Clear 2x3x4mm
L-X-01
Contains 2pcs of each red, green, blue, orange, white. Ideal for RES-SD/LoopA Core status indicator LEDs. Check color with a coin cell or DMM in diode test mode.
2.49 € (10 pieces)
incl. VAT, excl. shipping
SEQv4+ LE-MEC fastening hardware
W-SEQ-02
Spaces LeMEC and Plate PCBs for Matias switch installation. Contains 18x 5mm standoffs, 36x M3 nuts, suffices for a full SEQ v4+ (two LeMEC/Plate sandwiches).
11.98 €
incl. VAT, excl. shipping
wCore PCB and USB PCB
P-COR-01
This is the main MIDIbox Core PCB: a carrier board for the Waveshare Core407v MCU.
22.98 €
incl. VAT, excl. shipping
RES-SD PCB
P-COR-02
This board offers a SD card socket, a reset button and a handful of state indication LEDs. It is required to store user data on removable flash media.
9.98 €
incl. VAT, excl. shipping
MIDI8 PCB
P-COR-03
Provides 4 MIDI INs and 4 MIDI OUTs. Can accomodate a BLM port instead of MIDI IN/OUT 4.
19.98 €
incl. VAT, excl. shipping
I2C PCB
P-COR-04
Combines four classic MIDIbox I2C modules on a single board for four MIDI outs. Requires four PIC16F88 with I2C firmware.
17.98 €
incl. VAT, excl. shipping
LINETX PCB
P-COR-05
A slightly more compact version of the MBHP Line Driver Transmitter.
12.98 €
incl. VAT, excl. shipping
MCU Core407V, 1MB flash, bootloader
M-407-02
Waveshare Core407v with bootloader. Directly upload firmware using MIOS Studio via a USB cable; no ST-Link required! 1MB flash memory.
99.98 €
incl. VAT, excl. shipping
2pcs low-profile 2x25 pin female headers
H-25F-01
Female headers to attach the waveshare Core407V MCU board to the wCore. This low-profile variant is required to allow the wCore PCB to fit into the SEQ v4+ case.
4.99 € (2 pieces)
incl. VAT, excl. shipping
4pcs PIC16F88, MIDIbox I2C firmware
M-I2C-01
These PICs are already flashed with the MIDIbox I2C firmware. Used in the MIDI IIC boards (P-COR-04).
59.99 € (4 pieces)
incl. VAT, excl. shipping
Bill of Materials / Placement Guide
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Required Mouser parts
Can be directly transferred into your
mouser cart by copying & pasting the text below into the mouser part list import tool (you
may need to log in at mouser before the tool is available):
https://www.mouser.com/tools/part-list-import.aspx
https://www.mouser.com/tools/part-list-import.aspx
512-1N4148TR|89 798-MDF710S254DSA55|6 80-C1206C104M5R|20 863-BAT54LT1G|16 595-SN74HC165D|7 595-SN74HC595DR|10 517-929700-01-36-RK|2 710-61201021621|15 652-CRM1206QJW-103E|19 660-MF1/4DCT52R1001F|48 660-MF1/4DCT52R47R0F|32 652-4610X-1LF-10K|6 652-CR1206-JW-102ELF|19 642-3FTH9|34 642-1S11-19.0|34 863-BC818-40LT1G|16 771-BC807-25-T/R|16 757-TBD62381AFWGEHZ|1 517-N2516-6002RB|4 517-30308-6002HB|1 604-WP154A4SUREQBFZW|1 660-MF1/4DCT52R4701F|5 652-4816P-1LF-10K|2 538-22-23-2031|2 517-929836-01-36-RK|1 4816P-T02-103LF|1 534-7695|6 771-74HCT125D-Q100J|2 571-1-215570-0|2 649-93992-436HLF|1 650-NANOSMDC075F-2|1 652-CR1206JW-220ELF|2 652-CR1206JW-331ELF|1 660-MF1/4DCT52R1002F|2 660-MF1/4DCT52R2201F|2 652-CR1206JW-222ELF|2 71-CRCW1206560RJNEB|1 660-MF1/4DCT52R2203F|1 660-MF1/4LCT52R331J|1 490-SJ1-3535NG|1 611-1101M2S4AV2BE2|1 512-BC33725TAR|1 771-PRTR5V0U2AX-QR|1 538-67068-8000|1 538-89485-8000|1 594-K104K15X7RF5TL2|7 517-D2516-6V0C-AR-WE|1 642-MJTP1117|1 806-KCDX-5S-S2|10 490-SDF-80J|2 512-6N138M|4 517-4808-3004-CP|4 660-MF1/4DCT52R2200F|20 K330J15C0GF5TL2|8 517-4818-3000-CP|4 ECS-200-18-4X-CKM|4 636-182-025-213R561|1 595-MC3487NE4|2 517-4816-3000-CP|2 660-MF1/4DCT52R1000F|2 517-89110-0101|14 517-89116-0101|7 517-3365/10FT|6 517-3365/26FT|10 517-929838-04-36-RK|1 517-89124-0101|1 710-61200823021|1
Optional (DNF) Mouser parts
These parts are not required for a normal build - in general: don't buy them! They would go to the greyed-out locations specified as DNF ("do not fit") in the BOM above. If you want them anyways, e.g. for a special usecase, you can also copy & paste them into your mouser cart:
534-7695|2 710-61201021621|9 652-3306F-1-103|2 660-MF1/4DCT52R1002F|1 660-MF1/4DCT52R1001F|1 512-BC33725TAR|1
The BOM checker 'bot says:
All parts referenced from the CAD master files have been validated. The BOM should be safe to order!*
* Disclaimer: although we have taken the best care possible, we cannot guarantee 100%
accuracy and we cannot be held liable for erroneous orders when using
this tool, including (but not limited to) incorrect quantities and/or
types of components ordered through midiphy or other suppliers.
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Free Shipping!
midiphy MatriX (with pro metal case) Essential Kit
K-MTX-01
midiphy MatriX Essential Kit with pro metal case. Further parts and a 12V/5A PSU are required (see BOM and PSU note).
1,189.99 €
incl. VAT, excl. shipping
SEQ v4+ Eurorack Modules Essential Kit
K-EUR-01
A set of Eurorack PCBs, frontpanels and essential parts at a discount! Rack usage: up to 22HP, case depth 50mm. Needs further parts to be completed. Does not include required SEQ v4+/v4.
259.98 €
incl. VAT, excl. shipping
LoopA 2024 Enhanced Metal Case Essential Kit
K-LPA-02
Check out the K-LPA-03 Full Kit - we've discontinued this partial kit, but the full kit is available instead.
19" Rack Installation Note
Yes, we utilized every last millimeter of the SEQ v4+ case! :)
Your SEQ v4+ will fit in a 19" rack and will occupy 3U - the SEQ v4+ front panel size is at exactly the allowed size of 133,3 mm for a 3U rack unit. But: there are a few case screws in the back of the SEQ v4+, that, depending on the neighboring synths/rack units might push the required height to 136 mm.
As many synths often don't use their full allowed height at that depth, this is very often unproblematic.
Note, that installing the SEQ v4+ is easier, when you install it in a rotating motion, install the bottom edge first, then "roll in" the top.
Also, normally enough space can be made available, as there is almost always a bit of "wiggle room" present, as many synths/rack units will not use their full allowed height over their full depth. Installation will also be easier, if you do not install the SEQ v4+ as the last unit in your 19" rack, but first leave e.g. the top space unoccupied, then install the SEQ v4+, and then install the rack unit on top.
If you still encounter vertical fit problems, you could also remove the problematic screws at the backside of the SEQ v4+, reducing its height requirement to the exactly allowed 133,3mm. These screws may not be needed for stability, if your SEQ v4+ is firmly installed in a 19" rack.
In short: your sequencer will fit in 3U, but we just wanted to tell you that it can be a close thing! :)
Your SEQ v4+ will fit in a 19" rack and will occupy 3U - the SEQ v4+ front panel size is at exactly the allowed size of 133,3 mm for a 3U rack unit. But: there are a few case screws in the back of the SEQ v4+, that, depending on the neighboring synths/rack units might push the required height to 136 mm.
As many synths often don't use their full allowed height at that depth, this is very often unproblematic.
Note, that installing the SEQ v4+ is easier, when you install it in a rotating motion, install the bottom edge first, then "roll in" the top.
Also, normally enough space can be made available, as there is almost always a bit of "wiggle room" present, as many synths/rack units will not use their full allowed height over their full depth. Installation will also be easier, if you do not install the SEQ v4+ as the last unit in your 19" rack, but first leave e.g. the top space unoccupied, then install the SEQ v4+, and then install the rack unit on top.
If you still encounter vertical fit problems, you could also remove the problematic screws at the backside of the SEQ v4+, reducing its height requirement to the exactly allowed 133,3mm. These screws may not be needed for stability, if your SEQ v4+ is firmly installed in a 19" rack.
In short: your sequencer will fit in 3U, but we just wanted to tell you that it can be a close thing! :)
Video Tutorials
Downloads (for the tests described in the video tutorial)
MIDIbox NG test configuration
SEQ_L.ngc (28.50K)MIDIbox NG test script
fluxtest.ngr (8.83K)