GATES M5215 Vintage Tube Mic Microphone Preamps RCA 5879 Racked And Powered (3)
Item History & Price
Three (3)
1955 Gates M5215 mic preamps racked and powered.
All in fine working order running at factory spec.
Classic radio broadcast design microphone preamps from 1955.
Excellent sound, frequency response, sensitivity and signal to noise characteristics.
XLR or 1/4” TRS 150ohm inputs and 1/4” TRS 600ohm outputs.
Transformer balanced inputs and outputs.
Phantom power selectable on each preamp.
Drives both dynamic and condenser type mics to line ...level inputs.
Condenser mics sound super excellent on voice with these.
Crisp, responsive, slightly creamy and coloured, but very much detailed, clear and robust sounding mic preamps.
(for a basic demo with microphone and voice, check this link of a mp3 that can be previewed: https://spaces.hightail.com/receive/dzdWLuBLgA )
Stuff like low cost Chinese small diaphragm pencil mics really come to life going through these,
revealing excellent detail and depth.
Dynamic mics like SM58 etc., also shine through these.These are true vintage classic designed and built preamps.
Makes an awesome three channel vintage front end upgrade for any digital recording setup.
Also perfect for adding three vintage tube mic preamps onto the channel inputs of any console.
These can transform generic recording setups into a something more flavourful and inspiring sounding.
All in a compact excellent functioning plug and play package.
All the original caps and resistors still measure well within their original factory values and the cards have excellent signal to noise. The tubes consist of five NOS RCA 5879 tubes, the sixth tube is a GE version of the 5879, all installed just prior to listing this item and the RCA’s have but a few hours usage. The frequency response and gain characteristics is the same on all cards; these are all running at the intended manufacturer specs and they sound excellent.
If you look at the pics with the 5215 preamp cards, the empty hole on each end section of the preamp modules is where the B+ filtering aluminum cannister cap was housed. Each were removed because of height restrictions in the rack mount chassis as well as clearance for the meter output select switch. Ultimately, it’s safer and more reliable to handle the B+ filtering and supply duties with modern Japanese or similar high quality grade caps vs. 65 year old electrolytics, so these still would’ve been disconnected even if they’d been left mounted on the cards.
This also features a switchable AC power input for either 115v North America or 230v Europe.
In summary:
Three 1955 Gates M5215 Mic Preamps.
Racked and powered all in one vintage chassis.
Three XLR or 1/4”TRS - 150Ω Microphone inputs Transformer balanced
Three 1/4" TRS - 600Ω transformer balanced outputs.
Selectable phantom power on each channel's input.
Magnasync VU meter display, channel selectable.
(5) RCA NOS 5879 tubes and (1) good GE 5879.
115v or 230v AC power input selectable.
On/off switch, pilot light and fuse.
The power supply uses a 12X4 (12 volt equivalent of 6X4) as the rectifier tube.
The electrolytics comprising the power supply are new Nichicon PB series.
Power supply transformer is a new Chinese manufacture toroidial type supplying
the necessary plate and filament voltages.
The power supply, is also shielded by the unit’s aluminum framed inner chassis and well isolated from the audio cards.
3 rackunits high.
Lots of vintage bang for the buck in a nice compact rack mountable form.
The unit is being sold in the excellent working condition as described, but being a vintage tube device, it is being sold as is with no expressed warranty or return guarantee, but if there are any issues, I’d work to resolve them, though I’m confident that the unit, packed ruggedly, will arrive in the same excellent plug and play condition as described in this ebay listing and you will be happy with your investment, the accuracy of my description and the sound quality, so bid with confidence.
Shipping quoted in Canadian dollars:
$60 within Canada. $85 to the United States and $220 to Europe and Asia.Shipping through Canada Post comes with tracking and arrives typically within a week of shipping.
1955 Gates M5215 mic preamps racked and powered.
All in fine working order running at factory spec.
Classic radio broadcast design microphone preamps from 1955.
Excellent sound, frequency response, sensitivity and signal to noise characteristics.
XLR or 1/4” TRS 150ohm inputs and 1/4” TRS 600ohm outputs.
Transformer balanced inputs and outputs.
Phantom power selectable on each preamp.
Drives both dynamic and condenser type mics to line ...level inputs.
Condenser mics sound super excellent on voice with these.
Crisp, responsive, slightly creamy and coloured, but very much detailed, clear and robust sounding mic preamps.
(for a basic demo with microphone and voice, check this link of a mp3 that can be previewed: https://spaces.hightail.com/receive/dzdWLuBLgA )
Stuff like low cost Chinese small diaphragm pencil mics really come to life going through these,
revealing excellent detail and depth.
Dynamic mics like SM58 etc., also shine through these.These are true vintage classic designed and built preamps.
Makes an awesome three channel vintage front end upgrade for any digital recording setup.
Also perfect for adding three vintage tube mic preamps onto the channel inputs of any console.
These can transform generic recording setups into a something more flavourful and inspiring sounding.
All in a compact excellent functioning plug and play package.
All the original caps and resistors still measure well within their original factory values and the cards have excellent signal to noise. The tubes consist of five NOS RCA 5879 tubes, the sixth tube is a GE version of the 5879, all installed just prior to listing this item and the RCA’s have but a few hours usage. The frequency response and gain characteristics is the same on all cards; these are all running at the intended manufacturer specs and they sound excellent.
If you look at the pics with the 5215 preamp cards, the empty hole on each end section of the preamp modules is where the B+ filtering aluminum cannister cap was housed. Each were removed because of height restrictions in the rack mount chassis as well as clearance for the meter output select switch. Ultimately, it’s safer and more reliable to handle the B+ filtering and supply duties with modern Japanese or similar high quality grade caps vs. 65 year old electrolytics, so these still would’ve been disconnected even if they’d been left mounted on the cards.
This also features a switchable AC power input for either 115v North America or 230v Europe.
In summary:
Three 1955 Gates M5215 Mic Preamps.
Racked and powered all in one vintage chassis.
Three XLR or 1/4”TRS - 150Ω Microphone inputs Transformer balanced
Three 1/4" TRS - 600Ω transformer balanced outputs.
Selectable phantom power on each channel's input.
Magnasync VU meter display, channel selectable.
(5) RCA NOS 5879 tubes and (1) good GE 5879.
115v or 230v AC power input selectable.
On/off switch, pilot light and fuse.
The power supply uses a 12X4 (12 volt equivalent of 6X4) as the rectifier tube.
The electrolytics comprising the power supply are new Nichicon PB series.
Power supply transformer is a new Chinese manufacture toroidial type supplying
the necessary plate and filament voltages.
The power supply, is also shielded by the unit’s aluminum framed inner chassis and well isolated from the audio cards.
3 rackunits high.
Lots of vintage bang for the buck in a nice compact rack mountable form.
The unit is being sold in the excellent working condition as described, but being a vintage tube device, it is being sold as is with no expressed warranty or return guarantee, but if there are any issues, I’d work to resolve them, though I’m confident that the unit, packed ruggedly, will arrive in the same excellent plug and play condition as described in this ebay listing and you will be happy with your investment, the accuracy of my description and the sound quality, so bid with confidence.
Shipping quoted in Canadian dollars:
$60 within Canada. $85 to the United States and $220 to Europe and Asia.Shipping through Canada Post comes with tracking and arrives typically within a week of shipping.
