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musical instrument details
Berlant Series 30 Concertone Tube Mic Preamp 48v phantom and XLR Boutique Specia
Estimated price for orientation: 799 $
Category: Signal Processors or Rack Effect
Class:
Description
WILL SHIP WORLDWIDE WITH INSURANCE INCLUDED
We ship only USPS EXPRESS INTERNATIONAL and
USPS Priority Mail to the USA fully insured.
International Buyers make sure you can pay your import fees!!
There are no returns from international buyers but this is guaranteed not DOA.If you have less than a 5 feedback or negative feedback please contact us first.
We have a 100% rating on ebay and want to keep it that way. Contact us
if you have any concerns or questions. We ship at least twice a week.
We appreciate a 5 star rating for our service in the feedback section.
Ebay is very strict on their rating system for professional sellers.The original input transformer for the mic in has a huge step-up. It must have been for a ribbon. It has much too much gain for a dynamic or condenser mic. You have to change the mic input transformer. Now it is aRichen 1:10 input transformerthis one responds more like a vintage transformer, more similar to like a UTC A-10 or Triad HS-1
that will have a little ring and then a nice gradual rolloff above 20k.
Response is down to 20HzThe big knob you turn right for normal gain increase, if you go left its a distortion signal.
They are AX7 tubes. The meter level monitors the record head level not the The noise floor is pretty good as-is, but there are a few fussy things that could be done to maybe make it better like replace a few resistors around the first stage tube, add some filtering to the DC heater supply, maybe some extra power supply capacitance. But with a tube pre you're eventually limited by the amount of noise that's just generated inside that first preamp stage tube. So it seemed and sounded unnecessaryI think the input transformer is a good choice for this pre. Higher ratio would technically improve noise figure but then you'd be likely to be using a pad a lot and that would bring NF back to where it was and then some. A Jensen with the same ratio might be a little better in terms of overall frequency response, but I think this one (Richen 1:10) responds more like a vintage transformer, more similar to like a UTC A-10 or Triad HS-1 that will have a little ring and then a nice gradual rolloff above 20k. The low end was brought down from 50Hz to 20Hz somehow.48v phantom was added by rewiring the bias oscillator tube as a 48 volt regulator. This takes a little work, and makes it impossible to use in the future with a tape recorder.
Description
WILL SHIP WORLDWIDE WITH INSURANCE INCLUDED
We ship only USPS EXPRESS INTERNATIONAL and
USPS Priority Mail to the USA fully insured.
International Buyers make sure you can pay your import fees!!
There are no returns from international buyers but this is guaranteed not DOA.If you have less than a 5 feedback or negative feedback please contact us first.
We have a 100% rating on ebay and want to keep it that way. Contact us
if you have any concerns or questions. We ship at least twice a week.
We appreciate a 5 star rating for our service in the feedback section.
Ebay is very strict on their rating system for professional sellers.The original input transformer for the mic in has a huge step-up. It must have been for a ribbon. It has much too much gain for a dynamic or condenser mic. You have to change the mic input transformer. Now it is aRichen 1:10 input transformer
We ship only USPS EXPRESS INTERNATIONAL and
USPS Priority Mail to the USA fully insured.
International Buyers make sure you can pay your import fees!!
There are no returns from international buyers but this is guaranteed not DOA.If you have less than a 5 feedback or negative feedback please contact us first.
We have a 100% rating on ebay and want to keep it that way. Contact us
if you have any concerns or questions. We ship at least twice a week.
We appreciate a 5 star rating for our service in the feedback section.
Ebay is very strict on their rating system for professional sellers.The original input transformer for the mic in has a huge step-up. It must have been for a ribbon. It has much too much gain for a dynamic or condenser mic. You have to change the mic input transformer. Now it is aRichen 1:10 input transformer
this one responds more like a vintage transformer, more similar to like a UTC A-10 or Triad HS-1
that will have a little ring and then a nice gradual rolloff above 20k.
Response is down to 20HzThe big knob you turn right for normal gain increase, if you go left its a distortion signal.
They are AX7 tubes. The meter level monitors the record head level not the The noise floor is pretty good as-is, but there are a few fussy things that could be done to maybe make it better like replace a few resistors around the first stage tube, add some filtering to the DC heater supply, maybe some extra power supply capacitance. But with a tube pre you're eventually limited by the amount of noise that's just generated inside that first preamp stage tube. So it seemed and sounded unnecessaryI think the input transformer is a good choice for this pre. Higher ratio would technically improve noise figure but then you'd be likely to be using a pad a lot and that would bring NF back to where it was and then some. A Jensen with the same ratio might be a little better in terms of overall frequency response, but I think this one (Richen 1:10) responds more like a vintage transformer, more similar to like a UTC A-10 or Triad HS-1 that will have a little ring and then a nice gradual rolloff above 20k. The low end was brought down from 50Hz to 20Hz somehow.48v phantom was added by rewiring the bias oscillator tube as a 48 volt regulator. This takes a little work, and makes it impossible to use in the future with a tape recorder.
that will have a little ring and then a nice gradual rolloff above 20k.
Response is down to 20HzThe big knob you turn right for normal gain increase, if you go left its a distortion signal.
They are AX7 tubes. The meter level monitors the record head level not the The noise floor is pretty good as-is, but there are a few fussy things that could be done to maybe make it better like replace a few resistors around the first stage tube, add some filtering to the DC heater supply, maybe some extra power supply capacitance. But with a tube pre you're eventually limited by the amount of noise that's just generated inside that first preamp stage tube. So it seemed and sounded unnecessaryI think the input transformer is a good choice for this pre. Higher ratio would technically improve noise figure but then you'd be likely to be using a pad a lot and that would bring NF back to where it was and then some. A Jensen with the same ratio might be a little better in terms of overall frequency response, but I think this one (Richen 1:10) responds more like a vintage transformer, more similar to like a UTC A-10 or Triad HS-1 that will have a little ring and then a nice gradual rolloff above 20k. The low end was brought down from 50Hz to 20Hz somehow.48v phantom was added by rewiring the bias oscillator tube as a 48 volt regulator. This takes a little work, and makes it impossible to use in the future with a tape recorder.