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Millennia TD-1 Pre EQ DI  From Millennia

Twin Topology Class A Recording Channel

Millennia Media

Millennia TD-1 DI Detail Demo and Review -- Part 2

The Millennia TD1 Twin Topology (tube/solid state) DI/Preamp is explored in Part 2 of this 2-part series, as a DI (with alternate impedances), EQ, Tube and Solid State modes (for the mic pre and DI), Speaker Soak function, and is also used as a straight Microphone preamp (from the world-renowned HV3 series of Millennia mic preamps) in this in depth look of the rich features of this amazing little tonal device. The Millennia TD-1's sound quality, build quality, and overall feature-set make this device a truly world-class studio workhorse piece of equipment. Please don't hesitate to call us with any questions we can answer, or to order yours today. Sound Pure is available toll free 888.528.9703.

Manufacturer's Description from Millennia

Multiple Paths, One Goal: Total Sonic Realism

·         Four distinct inputs can be optimized for any source

·         Instruments – Twin Topology® DI channel; dual-triode 12AT7 vacuum tube or discrete FET solid state

·         Microphones – discrete solid state HV-3 microphone preamplifier

·         DAW or tape outputs – Discrete solid state line level amplifier

·         Guitar power amp inputs – Speaker Soak™ technology

·         Powerful yet musical tonal shading

·         Two bands of mastering-grade NSEQ-2 parametric Eq; 20 Hz to 20 kHz center frequency, 0.4 to 4.0 Q

·         Optimized DI input for any instrument with variable 470 k / 2 M / 10 M impedance

·         Nine outputs for unlimited functionality

·         Patented Re-Amp outputs with custom-designed magnetics emulate Les Paul® and Strat® pickups

·         Audiophile headphone output

·         Balanced and unbalanced monolithic outputs

·         Balanced and unbalanced discrete FET outputs

·         Microphone level output with large-geometry DIT-01 transformer: -3 dB 3 Hz – 300 kHz

·         Effortlessly musical performance at all dynamic levels

·         Input headroom >100 V, output headroom > 30 V

·         100% effective hum removal with numerous ground lifts & isolations

·         Built for critical professional applications

·         Ultra-clean toroid power supply: internal sub-chassis

·         Gold connectors, OFC audio wiring, silver Teflon power wiring

Millennia Media

About Manufacturer

Established as a classical music recording company in the 1980s, Millennia Media has grown to become one of the world's respected manufacturers of critical audio recording products. Now with more than 40,000 microphone preamplifier channels shipped, Millennia continues to set sonic precedent in solid-state and vacuum tube mic amps, equalizers, compressors, mixers, and recording channels. With numerous industry awards, fourteen TEC nominations, ten PAR Excellence and Reviewer's Pick awards, an E.Q. Blue Ribbon Award, three Stereophile Class A awarded products, an extensive owner's register of leading audio professionals, and a reputation for musical realism second to none, we believe you won't find a more transparent range of professional audio products on the planet.


Preamplifiers and General:


Instrument / DI Input Amplifier
Twin Topology®

TUBE: Selected twin triode vacuum tube amplifier (200 V)
SOLID STATE: Selected all discrete J-FET amplifier (50 V)

THD + Noise


20 Hz - 30 kHz (35 dB Gain)

0.0005% typical mic / line, 0.03% typical vacuum tube

Intermodulation Distortion

0.0009% typical mic / line, 0.03% typical vacuum tube

Frequency Response at -3 dB points

3 Hz to 300 kHz, typical. Varies with routing & topology

Maximum Balanced Line Input Level

+23 dBu (+43 dBu with Pad engaged or >110 Volts rms)

Maximum DI Input Level (Both Tube & SS)

+18 dBu (+26 dBu with Pad engaged or >15 Volts rms)

Maximum Output Level

+32 dBu active balanced outputs, +26 dBu unbal outputs

Maximum System Gain

45 dB standard (65 dB with optional HV-3 mic preamp)

Input Impedance (DI)

Switchable: 470 kilohms / 2 megohms / 10 megohms

Noise (Mic) (60 dB gain)

-128 dB EIN, 150 ohm source, -130 dB EIN common

Noise (Line) (10 dB gain)

-105 dBu

Noise (DI) (10 dB gain)

-90 dBu (solid state)

Phase Error (EQ out)

Less than +/- 5 degrees 50 Hz to 20 kHz

Parametric Equalizer:


Maximum Boost and Cut

+/– 15 dB (21 step detent

“Q” Range

Q+ 0.4 to 4.0 sweepable

Low Freq sweep

Switch In: Pure Class-A Discrete J-FETs

Hi Freq sweep

Switch Out: Pure Class-A Triode Tubes

Power Consumption

35 watts maximum

Power Requirements

Selectable: 100-120, 200-240 V ac, 50/60 Hz

Dimensions/Shipping Weight

8.5” W x 3.5” H x 13.0” D, 20 lbs.

Sound Clips





TD-1 Manual

TD-1 Data Sheet