4×4 TRS midi router and merger
Description
Routes and merges midi data, four midi inputs and outputs
- 4x TRS MIDI inputs, 4x TRS MIDI outputs
- Can route, split and merge MIDI streams
- Independent MIDI flow settings for notes/CC (red), clock (blue) and sysex (yellow)
- Easy to use user interface, quickly change routes, color coded routes and events.
- MIDI event monitor with color coding for various message types
- Save and recall up to 8 routing settings
- Automatically accepts both TRS A and TRS B at the inputs
- Outputs individually selectable between TRS A and TRS B
- Convert between TRS A and TRS B
- Save detach: Will send note off messages if a connection is detached
- Auto-restarter: Will send re-sync new clock connections automatically
- Sysex Buffer: Buffers Sysex messages if necessary in order to merge them
- Adjustable LED brightness
- works perfectly in combination with USB-Bridge A
- Full galvanic separation of inputs – no ground loops.
- Firmware update via midi Sysex
Merging and routing
Each of the MIDI inputs can be connected to one or more of the MIDI outputs. Similarly each of the MIDI outputs can receive MIDI data from one or multiple inputs.
TRS Bridge can set these routes in a simple modes for all types of MIDI messages, but it is also possible to route different kinds of messages differently:
NOTE AND CONTROLLER DATA
These are all the midi messages that can be merged without any issues. If two devices send midi at the same time, data will be interleaved and sent to the receiving device.
CLOCK DATA
Clock data can not be merged, only one midi clock stream can be used at a time. When changing the routing, TRS Bridge makes sure that each output only receives clock from a single input.
SYSEX DATA
Sysex data is even trickier to handle than clock data, because sysex messages can have an arbitrary length. if multiple sysex streams are received simultaneously, USB bridge A buffers the data and will forward it to the receiver as soon as possible. This way sysex messages are merged as well.
Auto-restarter
Establishing a new clock connection while your incoming MIDI clock is already running will
normally result in an out of phase clock. This is because the receiving MIDI device did not
receive a Midi-Start message. Or maybe it did receive a Start message at an earlier time,
but the clock is now out of sync.
To mitigate this, TRS-Bridge automatically detects such a situation and re-syncs the output
clock:
When a new clock connection is made, TRS-Bridge waits until the end of the current bar,
then sends a Midi-Stop and Midi-Start message to restart the MIDI device. Clock routing
then continues normally.
While waiting for the current bar to finish, no clock messages are sent. This is to make
sure the clock is always in sync and avoids issues with multiple clock domains.This can also be used to start and stop external gear in sync to create an arrangement – perfect for live situations.
Low latency
TRS Bridge has an extremely low latency between input and output:
- End of received message to start of output message: 30µS
- Clock latency edge to edge 250µS (220µS clock message length + 30µS latency)
Technical specs
- Printed aluminum front panel, 2mm thickness
- Voltage supply 12V
- Supply current: +12V: 50mA , -12V: 0mA
- Dimensions: 3HE, 6HP, 128.5mm x 30mm
- 25mm total height, D
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we normally dispatch the same working day if we get the order before 15:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.
Shipping times
Since April 2020 the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer.
There is absolutely nothing we can do about this unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
Saturday shipping
If you're in the UK and you order before 15:30 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.
Product Overview
4×4 TRS midi router and merger
Description
Routes and merges midi data, four midi inputs and outputs
- 4x TRS MIDI inputs, 4x TRS MIDI outputs
- Can route, split and merge MIDI streams
- Independent MIDI flow settings for notes/CC (red), clock (blue) and sysex (yellow)
- Easy to use user interface, quickly change routes, color coded routes and events.
- MIDI event monitor with color coding for various message types
- Save and recall up to 8 routing settings
- Automatically accepts both TRS A and TRS B at the inputs
- Outputs individually selectable between TRS A and TRS B
- Convert between TRS A and TRS B
- Save detach: Will send note off messages if a connection is detached
- Auto-restarter: Will send re-sync new clock connections automatically
- Sysex Buffer: Buffers Sysex messages if necessary in order to merge them
- Adjustable LED brightness
- works perfectly in combination with USB-Bridge A
- Full galvanic separation of inputs – no ground loops.
- Firmware update via midi Sysex
Merging and routing
Each of the MIDI inputs can be connected to one or more of the MIDI outputs. Similarly each of the MIDI outputs can receive MIDI data from one or multiple inputs.
TRS Bridge can set these routes in a simple modes for all types of MIDI messages, but it is also possible to route different kinds of messages differently:
NOTE AND CONTROLLER DATA
These are all the midi messages that can be merged without any issues. If two devices send midi at the same time, data will be interleaved and sent to the receiving device.
CLOCK DATA
Clock data can not be merged, only one midi clock stream can be used at a time. When changing the routing, TRS Bridge makes sure that each output only receives clock from a single input.
SYSEX DATA
Sysex data is even trickier to handle than clock data, because sysex messages can have an arbitrary length. if multiple sysex streams are received simultaneously, USB bridge A buffers the data and will forward it to the receiver as soon as possible. This way sysex messages are merged as well.
Auto-restarter
Establishing a new clock connection while your incoming MIDI clock is already running will
normally result in an out of phase clock. This is because the receiving MIDI device did not
receive a Midi-Start message. Or maybe it did receive a Start message at an earlier time,
but the clock is now out of sync.
To mitigate this, TRS-Bridge automatically detects such a situation and re-syncs the output
clock:
When a new clock connection is made, TRS-Bridge waits until the end of the current bar,
then sends a Midi-Stop and Midi-Start message to restart the MIDI device. Clock routing
then continues normally.
While waiting for the current bar to finish, no clock messages are sent. This is to make
sure the clock is always in sync and avoids issues with multiple clock domains.This can also be used to start and stop external gear in sync to create an arrangement – perfect for live situations.
Low latency
TRS Bridge has an extremely low latency between input and output:
- End of received message to start of output message: 30µS
- Clock latency edge to edge 250µS (220µS clock message length + 30µS latency)
Technical Specs
Shipping Details
How much is my shipping?
Shipping is automatically calculated before you submit your payment information. Simply add items to your cart and proceed to the checkout page, where you'll be offered shipping options and their prices. In the UK it's normally around £4 for order values under £150, and free above that. Shipping to mainland EU is typically between £7 and £20, depending on the shipping method and the size and weight of the order.
Do you ship to my country?
Almost certainly - the site will give you an estimate of shipping costs if you add an item to the cart and then enter your country and postcode. If you have specific requirements (such as if you prefer UPS over FedEx, for example) then let us know in advance and we'll try to work something out for you.
Shipping methods
We use a combination of Parcelforce, DPD, Royal Mail and UPS for the UK, and for international orders it's either Royal Mail, UPS, DHL or FedEx depending on where you are in the world. If you have a particular preference then try to let us know BEFORE you order so we can look into it for you. Please note that there may occasionally be additional shipping charges if you live in a remote area, depending on what surcharges are applied by the shipper. We'll get in touch to discuss this with you in such cases.
Dispatch times
For UK orders, we normally dispatch the same working day if we get the order before 15:00. If you have a really urgent situation then of course drop us an email before ordering and we'll always do our absolute best to accommodate you.
For international orders, we normally dispatch the same day if we get the order before 13:00 but again, occasionally it might be the next day before we can send it out, and sometimes FedEx or UPS may come a little earlier than scheduled which would also push an order into the next day.
Shipping times
Since April 2020 the couriers we use have suspended guarantees for shipping times, so even though we're paying them for priority services - 24-48 hours for most of the world - in practice it's often an extra day on top and sometimes it can be longer.
There is absolutely nothing we can do about this unfortunately. If you are outside the UK and it's a life-or-death situation where you absolutely MUST have that passive mult for the next day then... it may be better to find a local supplier.
Saturday shipping
If you're in the UK and you order before 15:30 on a Friday then we can send something for a Saturday delivery (NB: this applies to UK mainland addresses only). The success rate with DPD is about 95% so it's worth a punt most of the time. Please note that if you select Saturday shipping on an order placed earlier in the week, we'll wait until Friday to ship it.
Pre-orders
If a product is listed as a pre-order, it means we've ordered it from the supplier but it's not physically in stock yet. The product listing will include an estimated shipping date based on the best information we have from the supplier, but do bear in mind this is subject to change and is not a guaranteed date.
If you place an order containing a mixture of in-stock and pre-order items, we'll normally hold off on shipping anything until the pre-order item(s) have arrived, rather than splitting it into multiple shipments. If you need the in-stock items sooner, we'd recommend placing separate orders. As always, please get in touch if you have questions.
