DAC and Preamplifiers

The ZeroUno Experience
The ZeroUno delivers exceptional efficiency compared to conventional digital-to-analog converters. It enables your system to reproduce the entire musical spectrum—from the deepest bass to the highest frequencies—while driving your preamplifier or power amplifier with absolute authority. By ensuring perfect coherence from the low-end through the mid-high frequencies, the ZeroUno achieves a truly natural and immersive listening experience.
Shared Architecture, Unique Technology
Every model in the lineup—including the SSD MKII, SE, PLUS, and ULTRA—shares the exact same premium DAC stage.
Instead of varying by bandwidth, filters, or equalization, ZeroUno models differ exclusively in their output stage technology. Depending on the model, this stage utilizes solid-state transistors, vacuum tubes, or a hybrid design.
Seamless System Integration
The ZeroUno interfaces effortlessly with any preamplifier or integrated amplifier, significantly reducing the sonic impact of interconnect cables. With its powerful driving capability, you will find that the choice of cables is no longer as critical to the final listening experience as it used to be.
 
Direct Power Amplifier Drive
The ZeroUno can be upgraded with our proprietary PRE_STAGE module, allowing it to drive almost any power amplifier directly and bypass the preamplifier entirely. By eliminating the preamplifier and the necessary interconnect cables, this configuration yields massive benefits for both transparency and dynamics. Do not be surprised if your system delivers a noticeably more natural, unrestricted sound.
Compatibility
The optional PRE_STAGE is fully compatible and can be retrofitted into the following models:
  • ZeroUno SSD MKII
  • ZeroUno SE
  • ZeroUno SE ULTRA
 
Unmatched Versatility
Thanks to the inherent versatility of the ZeroUno, you can easily experiment with both configurations—with or without a preamplifier—and switch between them at any time. This design offers an uncommon level of flexibility for fine-tuning your audio system.
 
The ZeroUno Family: A Tailored Solution
The ZeroUno family provides a DAC for every need and every system. While every ZeroUno shares the exact same digital engine, each model features a distinct output stage architecture. Because every output stage possesses its own unique sonic fingerprint, you can choose the perfect match for your personal musical taste.
 

The ZeroUno DAC

ZeroUno DAC

Brief description

Digital inputs

Analog inputs

     

DAC

SSD MKII/dac

DAC + transistor output stage

4

–

DAC

SE/dac

DAC + triodes output stage

4

–

DAC

SE-ULTRA/dac

DAC + hybrid (triodes & FET) output stage

4

–

 

The ZeroUno Preamplifiers

ZeroUno PRE & DAC

Brief description

Digital inputs

Analog inputs

PRE & DAC

SSD MKII/pre

Preamplifier with DAC + transistor output stage

4

2

PRE & DAC

PLUS

Preamplifier with DAC + triode tube output Stage

4

2/3

PRE & DAC

PLUS-ULTRA

Preamplifier with DAC + hybrid (triode & FET)  output stage

4

2/3

 

ZeroUno OPTIONALS

Volume Control For SSD MKII/dac, SE/dac, SE-ULTRA/dac

Black Beauty set up

Balanced XLR-Output

i2S-input

XLR-Input for HiEnd CD transport

balanced Analog Input – XLR

3rd analog input

 

ZeroUno UPGRADE

from SE/dac to PLUS

from DAC 1st and 2nd series to SE/da, USB board excluded

from SE/dac to SE-ULTRA/dac

from PLUS to PLUS-ULTRA

USB board 01MKII able of MQA, Roon Ready

Spare Remote Controller

Product Information

THE TRANSISTORS BASED DAC & PREAMPLIFIERS

SOLID STATE DAC

ZeroUno SSD MKII DAC

► Ultra Linear Transistors based output DAC

► External Linear Ultra Low Noise Power Supply

► 4 digital inputs: RCA, XLR or BNC, USB, OPTIC

► Ultra Linear, PURE CLASS A, Solid State output stage – full discrete

► No capacitors on the signal line

► DSD based SABRE32 chip

► Amorphous transformers output

► No global feedback

► 24Vpp output swing

► (OPTIONAL) PRE_STAGE interface module to use the ZeroUno SSD MKII as a preamplifier

 

THE TRIODES BASED DAC & PREAMPLIFIERS

DIGITAL INPUTS WITH LINE TUBE STAGE

ZeroUno SE DAC

► 6SN7 Tube Based Output DAC

► 4 digital inputs: RCA, XLR or BNC, USB, OPTIC

► 6SN7 tube output stage, including CV181

► DSD based SABRE32 chip

► Amorphous transformers output

► No global feedback

► 5Vpp output swing

► ultralow-noise power supply

► ultra-low jitter clock

► 14 separated power supplies

► (OPTIONAL) PRE_STAGE interface module with 140steps digital 32 bits volume to use the ZeroUno SE as a preamplifier

DIGITAL and ANALOG INPUTs WITH LINE TUBE STAGE

ZeroUno PLUS

► 6SN7 Tube Based Output Preamplifier

► 4 digital inputs: RCA, XLR or BNC, USB, OPTIC

► 2 analog inputs

► Analog volume control

► DSD core – SABRE32

► Amorphous transformers output

► No global feedback

► 5Vpp output swing

► ultralow-noise power supply

► ultra-low jitter clock

► 17 separated power supplies

THE HYBRID DAC & PREAMPLIIERS

DIGITAL AND ANALOG INPUTS WITH HYBRID LINE STAGE

ZeroUno SE ULTRA DAC

► Hybrid Based Output – ECC88 tube and 2SK170 FET – DAC

► 4 digital inputs: RCA, XLR or BNC, USB, OPTIC, i2S optional

► ECC88/ECC82 and jFET SK170 in parallel  output stage

► DSD core – SABRE32

► Amorphous transformers output

► No global feedback

► Direct output without capacitors

► 30Vpp output swing

► ultralow-noise power supply

► ultra-low jitter clock

► 17 separated power supplies

► (OPTIONAL) PRE_STAGE interface module with 140steps digital 32 bits volume to use the ZeroUno SE as a preamplifier

DIGITAL AND ANALOG INPUTS WITH HYBRID LINE STAGE​

ZeroUno PLUS ULTRA

► Hybrid Based Output – ECC88 tube and 2SK170 FET

► 4 digital inputs: RCA, XLR or BNC, USB, OPTIC, i2S optional

► 2 analog inputs, balanced or unbalanced

► Analog volume control

► ECC88/ECC82 in parallel with jFET SK170 output stage

► DSD core – SABRE32

► Amorphous transformers output

► No global feedback

► Direct output without capacitors

► 30Vpp output swing

► ultralow-noise power supply

► ultra-low jitter clock

► 19 separated power supplies