Josephson Engineering C725
The Josephson C725 provides classic studio microphone performance using a hybrid of vacuum tube and solid state technology, and the classic dual-diaphragm capsule manufactured that’s used in the C700 and C716 microphones. A separate high voltage regulated power supply is provided, with five switchable directional patterns and a unique ☉/☾ selector to optimize the signal path. The C725 is suitable for detailed vocal and instrument pickup.
The head grille uses Josephson’s patented aluminum foam, fused to the housing for physical and electrical protection, with only an ultra-fine highly open mesh for contamination protection. No other structure is needed, so internal reflections are random and minimal, allowing clean, detailed sound pickup. The capsule assembly is internally shock-mounted so the microphone can be attached directly to a stand through its yoke mount. The C725 features a satin nickel finish for durability in studio use.
The internal circuitry is related to other Josephson mics, with a cascode topology for best linearity. Instead of using two FETs to form the cascode, in the C725 the voltage gain section uses a low-noise FET, while the current gain stage uses a readily available current production pentode vacuum tube. This provides the low noise of the FET along with the dynamic characteristics of the vacuum tube. The output is provided through a custom nickel-core transformer, which has independent windings for output and gain control.
The PS725 power supply allows operation on 100 to 240 volt mains supplies and allows selection of five directional patterns and two signal/dynamics characteristics. The ☉ setting operates at full gain, with a high sensitivity of 40 mV/Pa, and the warmth characteristic of many vacuum tube mics. In the ☾ setting, a small amount of negative feedback is provided from a dedicated winding of the output transformer back to the front end of the amplifier. This reduces the sensitivity by 12 dB, to 10 mV/Pa, and linearizes the circuit to provide a more neutral character and the ability to handle higher levels. Switching between the two modes is accomplished with a precision reed relay inside the microphone. Five separate power supply sections are used: a preregulator for the vacuum tube filament along with a final regulator inside the microphone so that filament voltage is not changed by cable length, two low noise supplies for the high voltage regulator, and a precision shunt regulator for the vacuum tube plate and polarization voltages.
The cable is a highly flexible five-pair type, 3 m long, terminating in a “large Tuchel” 12-contact connector. It may optionally be extended up to 50 meters. One pin of the male connector is removed and the corresponding female socket blocked to assure that other mics are not connected to the power supply.
The C725 is supplied in a rugged, Pelican brand fitted carrying case with the power supply, line cord and protection sleeve.
- PACKAGE CONTENTS Includes carrying case, PSU, line cord and protection sleeve
- LENGTH 261 mm
- DIAMETER 63 mm
- UNIT WEIGHT 1.2 kg
- TUBE OR SOLID STATE Tube/Solid State Hybrid
- TRANSDUCER TYPE Condenser
- POLAR PATTERN Bi-Directional / Figure-Eight, Cardioid, Hyper-Cardioid, Omni-Directional
- NUMBER OF MICROPHONES Single Microphone
- FREQUENCY RANGE 20 Hz - 20 kHz
- SENSITIVITY -28 dBV/Pa (40 mV) ¤, -40 dBV/Pa (10 mV) ☾
- MAX. SPL 165 dB SPL
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We use UPS so you can expect 1 - 3 business days to get it after we ship (1-2 days if we’re shipping to continental Portugal). If the item you bought is in stock, we usually ship the same day (for orders placed until 11AM) or the next day at the latest. If we’re out of stock, we can usually get the products in 2-5 working days. Please get in touch if you have a specific deadline you have to meet before ordering. In some cases we can ship a demo unit to get you to work if the manufacturer has a longer lead time.
Regarding plugin sales in our online store, those are processed automatically so you'll receive your code immediately after your purchase!
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According to EU law, we accept returns for all the products purchased through our online store during the next 14 days after receiving the goods, provided that the packaging is in it’s original condition. If this is not the case, we reserve the right to refuse the return or charge a re-stocking fee.
All returns need to be pre-approved by us and must be complete including accessories and documentation with original packaging.
You are responsible for return shipping costs including shipping insurance which is recommended to protect your items, as you are liable for items damaged during return shipment. Additionally, if you received free shipping on the order when we fulfilled it, we will be deducting the value of this shipping cost from your refund/discount.
We do not accept returns of the following goods: (1) Software and computers; (2) All custom or special order items; (3) Magnetic tape or other recording medium; (4) Personal use items, such as headphones or windscreens; (5) Studio furniture, racks and chairs.
After inspection of the returned goods, and providing that they meet the conditions stated above, we will issue a refund or give you credit for another purchase.
Everything we sell is covered by the manufacture's warranty, which is a least 1 year. Special conditions may apply.
Yes, we do. Please contact us to know if the software you’re looking for has an Education licence available.
We don’t through this website, but please check our Reverb store. There you can find B-Stock and Ex-Demo gear, as well as other stuff (used and new) from brands we don’t usually represent.
At Arda we try to work with only the best brands in the business, because we know how important is reliability in a professional environment. That being said, sometimes shit happens. If you run into some issue with anything you bought from us, please get in touch and we’ll try our best to take care of it ASAP. We might even be able to provide you with some sort of replacement gear in order to minimize downtime.