<h1>Universal Audio 4-710d Four-Channel Tone-Blending Mic Preamp w/ Dynamics</h1>
<i>Four Channels of Tone-Blending “Twin-Finity” Preamps and 1176-Style Compression with Built-In A/D Converters</i><br /><br />
The Universal Audio 4-710d is a boutique quality, four-channel microphone/line preamplifier with unique tube and solid-state tone blending capabilities — perfect for a wide range of microphone and instrument sources. This versatile multi-channel preamp offers selectable 1176-style compression circuitry on each channel, plus four additional line inputs feeding eight channels of pristine analog-to-digital conversion. Building upon UA’s classic analog design approach, combined with smart modern features, the 4-710d is the most flexible preamp in the UA lineup.<br /><br />
At the core of the 4-710d are four channels of tone-blending “Twin-Finity” mic preamps with true-bypass 1176-style compression, including specially tuned "fast" and "slow" settings. Each of the four mic preamp channels allows for continuously variable phase-aligned tone, between a 100% tube and 100% solid-state signal path. Send and return jacks are available for external processing or signal access.<br /><br />
The eight analog inputs are digitized via ultra high-quality 24-bit A/D converters at selectable sample rates up to 192 kHz. Digital output is available via dual ADAT “lightpipe” or AES/EBU DB-25 connectors, facilitating integration with most popular audio interfaces.<br /><br />
<h3>Features:</h3>
<strong>Preamplifiers</strong><br />
Four TEC Award-winning 710 Twin-Finity™ microphone/line preamps, each featuring:
<ul>
	<li>Dual-path 285-volt Class-A tube and transimpedance solid-state preamps                         </li>
	<li>Phase-aligned tone-blending of tube and solid state circuits, creamy to crunchy                </li>
	<li>Newly designed 1176-style compression circuit per preamp channel                               </li>
	<li>JFET Direct Input with 2.2MΩ ultra Hi-Z impedance w/auto input override                        </li>
	<li>Large backlit VU meters for flexible metering of input drive, gain level, and gain reduction   </li>
	<li>Balanced send/return inserts (half-normalled)                                                  </li>
	<li>48V phantom power                                                                              </li>
	<li>75 Hz low cut filter                                                                           </li>
	<li>Polarity switch                                                                                </li>
	<li>Monolithic balanced output stage                                                               </li>
</ul>
<strong>Analog-to-Digital Conversion</strong><br />
Eight channels of high quality 24-bit A/D conversion:
<ul>
	<li>Selectable sample rates up to 192 kHz                              </li>
	<li>Digital output via dual ADAT optical and AES/EBU DB-25 connectors  </li>
	<li>8-channel soft limiter (switchable for all channels)               </li>
	<li>Ultra-low jitter clock subsystem                                   </li>
	<li>LED metering array with clip/hold indicators                       </li>
	<li>75Ω BNC work clock I/O                                             </li>
	<li>Digital outputs anti-pop protection on power-up                    </li>
</ul>
<strong>Other</strong>
<ul>
	<li>Universal voltage internal power supply           </li>
	<li>Heavy-duty metal construction, two-space rack unit</li>
	<li>One year warranty including parts and labor       </li>
</ul>