The 710 Twin-Finity from Universal Audio is a single channel, dual path microphone preamplifier that includes an instrument direct inject (DI) input. The dual path design combines the "warmth" of a high-voltage vacuum tube design with the clarity of a solid-state circuit. A blend control allows the dialing-in of either circuit or a combination of both in varying degrees.

The tube circuit utilizes a 310V single ended, Class-A triode tube stage, which is phased aligned with a solid-state gain stage. Both stages are fed from a variable gain solid-state transimpedance input amplifier, and are summed to a single output according to the setting of the blend knob. Along with the variable input and output controls, this design allows for an almost infinite range of tones to be dialed-in.

The discrete JFET DI input circuit can handle virtually any electric instrument, including guitars and basses with both active and passive pickups. The VU meter can switch between displaying standard output levels and a "Drive" mode that allows for seeing how hard the input stage is being driven. Phantom power, low pass filter and a polarity flip switch add full functionality to a versatile preamplifier.

Single Channel    Dual-Path    Phase-Aligned Tone-Blending    Hi-Z Instrument DI

Single channel, dual topography microphone/line preamplifier with instrument DI

High voltage Class-A tube circuit paired with phase-aligned solid-state path

Dual gain stages and blend control provide either "wire with gain" or tube based "creamy to crunchy" sonics with any combination in between

Discrete JFET direct inject input with ultra high 2.2MΩ impedance

Hi-Z input automatically switches from microphone/line via "Jack Detect" feature when a guitar or bass are plugged-in

Backlit output and "Drive" VU metering

Portable, rack-mountable design for studio, desktop or stage

Related Questions and Answers

Q: 1. Does this come with diffusers , if not, where can you buy them ????

A: It comes with two diffusers. Unfortunately you're going to need more diffusion. They're like the ubiquitous Sto-Fen diffusers, if you find that adequate fine, but for softer lighting you'll need some kind of DIY solution to put between the flash heads and the subject.

Q: 2. I have the OM-D E-M5 MII and I can't get STF-8 to fire during focus bracketing. Is it not compatible or am I missing a setting?

A: You have to change another setting to get it to flash. I had the same problem until I found the answer in the manual. It still took some effort because the manual was not that clear.Under Menu select 2 Advance Camera Shooting Options , Anti-Shock/Silent , Silent Mode Setting , Flash Mode , Allow .It took me a long time to figure this one out. Be sure to set your flash time long enough for the flash to recharge.Good Luck...Doug

Q: 3. Has anybody been able to get this thing to work on a Pen-F? I tried setting via Menu2 to Silent Mode Setting - allow Flash Mode, and still this thing does not work.

A: The flash would not work on Silent Mode Setting

Q: 4. Is this compatable with the E-M1 Mk 1?

A: Yes, it will work with any olympus camera. You have to use it with either the 30mm f/3.5 macro, 60mm f/2.8 macro, or 12-40 f/2.8 PRO.

Q: 5. New to flash here. What is the maximum possible camera to subject distance for adequate illumination?

A: Twin flashes are not made for covering great distances. They are mainly made for macro photography, extreme close ups of things such as flowers, bugs, and bugs on flowers. As a rough estimate the Olympus STF-8 Twin flash should be fine in a range up to 8-10 feet at the most. If you are looking for more in a distance range up to 40-50 feet, the Olympus FL-900R would be a better option. Please take a look at the following link: https://bhpho.to/2h05lsh

Q: 6. Will this work on a panasonic GH5?

A: Sorry, I don't know the Panasonic system.

Q: 7. Flash will not fire on the OM D I mark II. Is there a setting buried in the menus that has to be changed?

A: By any chance do you have the camera set for STACKING tr SILENT SHUTTER mode? if yes go to SHOOTING MENU 2 then go to AntiShock/Silent press the OK button and then scroll down to SILENT MODE SETTINGS then scroll to the right and then scroll down to select FLASH MODE and set to ALLOW. If that does not resolve the issue please contact Olympus Technical Support 1-888 -553-4448

Q: 8. Is this compatible with Lumix GH5?

A: Yes, with any 4/3 lens with a 46mm filter thread

Q: 9. Will this work on in TTL mode on a Panasonic G85 or G9 with the Olympus 60mm macro?

A: Yes, I use it with the Panasonic G85-Olympus 60mm combo.

Q: 10. Can the flash heads be removed from the mounting ring for more lighting choices?

A: The Olympus STF-8 Twin Flash Heads are fixed to the cables connected to the pack but it does have cold-shoe mounts, so that allows you to extend the height of the flash as well as to distance it further away from the subject for better light diffusion.