Rens Heijnis custom-built audio equipment - Although the DPA/B&K 4003, 4004 and 4012 have a transformer less output and a 130V power supply, for these microphones are also good improvements possible. The
![3x DPA 4003 versatile omnidirectional microphones, factory matched w/ consecutive serial numbers | Reverb 3x DPA 4003 versatile omnidirectional microphones, factory matched w/ consecutive serial numbers | Reverb](https://images.reverb.com/image/upload/s--I-gc1OJ5--/t_card-square/v1654601663/narrzgbe0iphoutazury.jpg)
3x DPA 4003 versatile omnidirectional microphones, factory matched w/ consecutive serial numbers | Reverb
![Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb](https://images.reverb.com/image/upload/s--bcCIm0Rq--/t_card-square/v1587313318/fsgvmufqbk8gd5j4vvtq.jpg)
Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb
![Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb](https://images.reverb.com/image/upload/s--i6H-2TZC--/f_auto,t_large/v1587313321/rnhce6momr649pgi64rj.jpg)
Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb
![3x DPA 4003 versatile omnidirectional microphones, factory matched w/ consecutive serial numbers | Reverb 3x DPA 4003 versatile omnidirectional microphones, factory matched w/ consecutive serial numbers | Reverb](https://images.reverb.com/image/upload/s--90EbnawI--/t_card-square/v1653133371/mw1rqubhtqywdumknsvh.jpg)
3x DPA 4003 versatile omnidirectional microphones, factory matched w/ consecutive serial numbers | Reverb
![Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb Matched Pair of DPA 4003 130V Omnidirectional Condenser Microphones with HMA4000 130V Preamp | Reverb](https://images.reverb.com/image/upload/s--7IugnuYR--/f_auto,t_large/v1587313320/ulotdg7b5adfe80edlm4.jpg)