Weiss manufactures digital and analog audio equipment for quality conscious people. Expect no less than excellence in design, ergonomics and sonic quality. Our commitment is to supply state-of-the-art audio ­equipment to music studios and residential customers alike.



Seven-band equalizer

Weiss EQ1

The EQ1 is a two channel digital equalizer with seven parametric bands. It has digital inputs/outputs exclusively. The EQ1 is available in four different configurations. All of them work at up to 24 Bit/96 kHz. The basic model is the EQ1-MK2, the linear phase model is the EQ1-LP, the dynamic model the EQ1-DYN. The EQ1-DYN-LP incorporates both LP and DYN versions in one unit. The mode of operation (LP or DYN) can be chosen after power-up. All models are user-upgradeable to any other version.


Compressor, limiter, de-esser

Weiss DS1

Weiss DS1-MK3, the reference when it comes to digital mastering Compressors and De-Essers. An extremely versatile single band limiter/compressor with M/S mode and Parallel Compression facilities.

The Weiss 102 Series split band De-Esser was one of the mastering industry’s most highly praised digital product. With the DS1-MK3 the Weiss engineers have taken their de-esser design and combined it with the best features of the time proven 102 Series Dynamics Processors. The result is a stand alone digital Dynamics Processor with unparalleled performance and sonic integrity.


De-noiser, de-clicker, ambience processor

Weiss DNA1

The Weiss DNA1 is an extremely versatile toolbox for restoration work. It handles broadband noise reduction as well as de-clicking and de-crackling. The K-Stereo Ambience Processor brings back life to the music in case it lost some during de-noising, or generates a pseudo stereo signal out of mono. Finally an M/S matrix allows to define the stereo width.

DNA1 – a milestone in the Gambit Series equipment developments at Weiss Engineering. Three state of the art algorithms are packed into the DNA1. The de-noising section has been developed in cooperation with the Pure Notes Company (UK), the de-crackling and de-clicking algorithms are the Weiss R&D lab’s design and finally the K-Stereo Ambience Processor we licensed from Mr. Bob Katz (USA). All functions can be used concurrently. The DNA1 can be switched to M/S mode which can be useful e.g. for de-noising the M channel only while applying less de-noising on the S channel to leave the ambience intact.


Sampling frequency converter

Weiss SFC2

The SFC2 is a versatile sampling frequency converter with two completely independent stereo converters in a single 19 inch (1HU) unit. A SFC basically consists of a high order, linear phase, digital low pass filter. With the proper design of that low pass filter the quality of the SFC process can be made “arbitrarily” good – independent of the conversion ratio. Like what we achieved in the SFC2.

Standard sampling frequency converter chips continuously measure the input frequency and then generate the output frequency and the filter specifications accordingly. This results in coefficient “jitter” because the input signal sampling frequency jitter modulates the cutoff frequency of the digital filter. The SFC2 uses a fixed-ratio scheme where the output is directly derived from the input sampling frequency – therefore no coefficient “jitter”, no filter modulation, more transparency.

The main application of the SFC2 is integrating playback or outboard equipment into an environment that either runs at double- or standard-sampling frequency. To allow this equipment to be positioned anywhere in the processing chain, the SFC2 features two completely independent two-channel sampling frequency converters to simultaneously down- and up-sample a signal. Alternatively, it can also be used to convert the sampling frequency and reduce the word-length of any two stereo audio signals at the same time.


A/D converter

Weiss ADC2.jpg

Two channel A/D conversion with Line/Mic inputs and AES/EBU/Firewire output – this summarizes the ADC2’s main capabilities, but doesn’t tell much about its stellar sonic quality and its plethora of features.

The ADC2 is the successor of our renowned two channel ADC1-MK2 A/D Converter. It uses state of the art A/D chips in our proven “correlation technique” configuration, which lowers converter imperfections. The analog input stages are kept balanced from the input connectors throughout to the converter chips. A high quality microphone preamplifier is built in as a standard feature. AES/EBU and optional Firewire outputs work at up to 192 kHz/24 Bits.


D/A converter

Weiss DAC1

The DAC1 is our flagship stereo D/A converter used for highest quality D/A conversion. The MK3 version uses one of the latest DAC chips on the market in conjunction with eight discrete operational amplifiers of our own design. The MK2 version is based on our proven class A design using high performance op-amps and discrete output stages. Both DAC1 versions deliver incredible transparency – the main objective in our designs.

The DAC1-MK2/-MK3 are stereo 24 Bit/192 kHz D/A converters designed with the aim of keeping an uncompromising audio signal path. Much detail and thought was spent on the digital input with its extremely low jitter sensitivity, as well as the analog output stages. Options for the DAC1 include interfaces for Firewire and USB, DSD playback and infrared or wired remote control.


Firewire d/a converter

Weiss DAC2

The DAC2 is based on the renowned DICE Firewire chip of the TC Applied Technologies company on the digital side and on the equally well received Burr Brown D/A converter chips on the analog side. The combination leads to a flexible and very good sounding D/A Converter.

As a high performance stereo, Firewire based, digital to analog and digital to digital converter, the DAC2 can be used either standalone or in conjunction with a PC or MAC computer. It allows for various format conversions like Firewire to analog, AES/EBU to analog, Firewire to AES/EBU, AES/EBU to Firewire. In addition it offers a digital insert point between the Firewire input and the analog output. The analog output level can be controlled via the front panel keys.


Preamplifier, de-esser

Weiss A1

The A1 is our first analog input/output only product. A state-of-the-art microphone/line pre-amplifier with a de-esser in the popular API 500 Series format. The side-chain of the de-esser uses a DSP – unique but advantageous for the precision of the side-chain and enabling the use of a very low noise gain element. Two modules can be side-chain linked for stereo operation.

It has a transformer balanced wide level range input with a pad for line level sensitivity. The input gain is set with a sixteen position switch. A low cut filter is useful for microphone work. Phantom power can be switched on or off.

The output is also transformer balanced and has an additional potentiometer to set the output level independently from the levels the de-esser is running at. A polar its switch allows to change the absolute polarity of the output signal.

The de-esser section uses a bandpass filter to split the audio band. The bandpass filter parameters are the center frequency and the Q. The Threshold parameter defines the sensitivity of the de-esser side-chain. A few attack and release times and ratios can be selected via DIP switches at the bottom of the unit. A LED indicates whether there is any gain-reduction happening and a “listen” switch allows to listen to the signal filtered by the band-pass. Useful to zoom in on e.g. specific sibilances. The de-esser can be bypassed with a switch. Several LEDs allow to monitor the input and output levels.


Sampling frequency converter

Weiss Saracon

SARACON – a versatile multichannel file format and sampling frequency conversion tool of utmost sonic quality and unprecedented conversion speed. All standard sampling frequencies are supported, including DXD and DSD. The Super Audio Center recommends SARACON for DSD conversion. POW-R dithering is also included.

Saracon runs on Windows™ or OSX™ platforms and comes in two variants: SARACON and SARACON-DSD. The latter obviously also supports DSD conversion in both directions, including DSD64 and DSD128 variants. SARACON is a batch processor working on source and destination files. It does not support streaming modes. Many standard input and output formats are supported. POW-R dithering is a standard feature as well.