{"id":15510,"date":"2022-06-02T13:10:38","date_gmt":"2022-06-02T11:10:38","guid":{"rendered":"https:\/\/storung.com\/catalog\/uncategorized\/esa1-preamplificador-de-esserena1-preamplifier-de-esser\/"},"modified":"2022-06-14T10:23:51","modified_gmt":"2022-06-14T08:23:51","slug":"a1-preamplifier-de-esser","status":"publish","type":"product","link":"https:\/\/storung.com\/en\/catalog\/proaudio\/weiss-engineering\/a1-preamplifier-de-esser\/","title":{"rendered":"A1 preamplifier, de-esser"},"content":{"rendered":"<p><strong>MAIN FEATURES<\/strong><\/p>\n<p><strong>Input, pre-amplifier<\/strong><br \/>\nThe A1 microphone pre-amplifier stage uses a transformer-balanced, discrete, class A design with a current-feedback amplifier architecture for low distortion and wide bandwidth across the full gain range. The pre-amplifier sports very low noise for a wide range of source impedances, across the full gain range. The gain is variable in 3 dB steps between 15 and 60 dB. A 24 dB pads allows to feed line levels as well. A high pass filter can be switched in. The corner frequency can be selected to be 40 or 80 Hz.<\/p>\n<p><strong>De-esser<\/strong><br \/>\nThe de-esser section uses an advanced mixed signal design: The direct signal path is fully analog while the side-chain works in the digital domain. This enables the use of a low distortion precision MDAC (Multiplying D\/A Converter) as the variable gain element. The side-chain is built for very low latency, using a 500 kHz sampling frequency.<\/p>\n<p><strong>Front panel controls<\/strong><br \/>\nThe front panel controls for the de-esser section are knobs for frequency, bandwidth and threshold. Further parameters (ratio, attack and release time) can be set via DIP switches.<\/p>\n<p><strong>Output<\/strong><br \/>\nThe output also uses a transformer balanced design with a high maximum output level of +27 dBu. An additional output gain potentiometer allows to set the output level in a wide range.<\/p>\n<p><strong>Applications<\/strong><br \/>\nThe A1 is used as a microphone pre-amplifier for recording or for live purposes with the option to do de-essing on the fly. As a bus de-esser it is used during mix down or mastering in a stereo fashion, i.e. by linking the side-chains of two modules.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>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 \u2013 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.<br \/>\nIt 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.<\/p>\n<p>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.<br \/>\nThe 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 \u201clisten\u201d 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.<\/p>\n","protected":false},"featured_media":12363,"template":"","meta":[],"product_brand":[],"product_cat":[186,219],"product_tag":[],"class_list":["post-15510","product","type-product","status-publish","has-post-thumbnail","product_cat-proaudio","product_cat-weiss-engineering","first","instock","taxable","shipping-taxable","purchasable","product-type-simple","pofo-product-4col"],"acf":[],"_links":{"self":[{"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/product\/15510","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/media\/12363"}],"wp:attachment":[{"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/media?parent=15510"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/product_brand?post=15510"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/product_cat?post=15510"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/storung.com\/en\/wp-json\/wp\/v2\/product_tag?post=15510"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}