Descrizione

Perfetto. Volendo vendo in pacchetto con i finali Mono tra i miei annunci e regalo cavi di Potenza (valore 150 euro) The Most Important Preamplifier In the World: The Dynaco PAS Introduction: The venerable Dynaco PAS is perhaps the most famous stereo preamplifier of all time, Much like the Dynaco ST-70, it introduced the magical sound of tubes to thousands of audiophiles throughout the past decades. The PAS is still a popular model, both in stock form or as a platform to be tweaked and modified. In this article, I will touch on a general outline of the circuit, the sonics strengths and weaknesses, some of the more popular modifications, and an idea of what to look for when rolling tubes. The Circuit: So what is a Dynaco PAS? There are three iterations. The PAS-2, the earliest stereo version, with circuitry taken from the PAM-1 mono unit and a gold faceplate with brown knobs. The PAS-3, with a more modern silver faceplate with matching knobs. And finally, the PAS-3X with improved tone controls. This is a full-function preamplifier with tone controls and inputs for phono, reel-to-reel, tuner, and others. Gain, of course, is higher than modern preamplifiers since this was the days before high output CD players. All PAS preamplifiers share the same circuit: For the phono stage, one 12AX7 per channel, each section in series, using loop negative feedback connected to a capactior and resistor network to provide the RIAA equalization. For the linestage, a 12AX7 per channel, each section in series, utilizing loop feedback to lower distortion and provide a low enough output impedance to drive cables into a high impedance input of an amplifier. Power supply rectification is handled by a 12X4 tube. Filaments for the 12AX7s come from a voltage-doubler circuit, which - as the namesake suggests - doubles the supplied AC voltage from the transformer and smooths it out to DC. Having DC on the filaments also helps to reduce hum. Stock Sound: My own experience wit

Modalità di consegna

In fase di acquisto potrai scegliere tra queste opzioni

Punto di ritiro

da 7,99 €

Ritiro del pacco presso un negozio o un locker

Consegna prevista entro 2-6 giorni lavorativi

Oppure

Consegna a domicilio

da 13,99 €

Il pacco verrà recapitato all'indirizzo da te scelto

Consegna prevista entro 3-6 giorni lavorativi

Spedizione gestita da Subito