Preamplifier Volume Control OPA2604

This preamplifier is both simple and efficient, and benefits from a robust and high-performance design that provides high-quality, transparent and accurate audio reproduction.

Average votes for this product
5.0 / 5

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Reference : 14307
New product

179,00 €tax incl.

149,17 € tax excl.
 
This product is discontinued
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Facturation France
SAV France

2 Years warranty

Accessories for this product

Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.

 
More info

Préamplificateur

Contrôleur de volume AOP OPA2604

Préamplificateur contrôleur de volume AOP OPA2604

This preamplifier is both simple and efficient, and benefits from a robust and high-performance design that provides high-quality, transparent and accurate audio reproduction. The preamplification stage is based on a double OPA2604 AOP for amplification and 4 other double OPA2604 AOPs acting as output buffers and allowing to obtain a higher output current. All the PDOs are mounted on DIP8 supports and can therefore easily be replaced by other models in order to adapt the sound reproduction according to the listener or his audio system.

The power supply stage is not to be outdone, since a series of Weimar capacitors is used instead of a large capacitor to filter the electrical signal and provide a clean power supply for the entire circuitry. Four Class A voltage regulators are integrated in this stage to stabilize the power supply.

The connection of this preamplifier is extremely simple since we find in input and output unbalanced stereo RCA. On the front panel, the unit has a rotary knob associated with an ALPS 50KX2 potentiometer allowing a clean adjustment of the volume level. All components are integrated in a sturdy brushed aluminium housing.

Technical characteristics

Specifications
Product typePreamplifier
Input1x Stereo RCA
Output1x Stereo RCA
AOP5x AOP OPA2604
Frequency response20Hz - 30kHz
Gainx6
General
Power supply (power cable not included)AC220V
Dimensions (LxPxH)237 x 246 x 61mm
Weight2.41kg
 
Data sheet
InputRCA
OutputRCA
ColorSilver
ColorBlack
ClassN/A
Remote ControlNo
 
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Average votes
5.0 / 5
3 reviews
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Note :
 5/5
Date :
Lars
The reason for buying this item was impedance matching between DAC and active speakers in my desktop/2nd setup used for Tidal streaming and playing local Flac files. In this case RME ADI-2/Teddy Pardo LPS and Airpulse A100/REL sub. Right out of the box this little preamp sounds really good. It is dynamic, transparent with a soundstage that is quite impressive for the pris tag. This unit also offers the opportunity for opamp rolling. After consulting Audiophonics I change the default opamps to Sparkos and Muses which increased the sq to a higher level. The soundstage is wider and deeper. Transparency is much better with a slight warm midrange. Bass is more dynamic. The presentation is much more musical. This little "no name" preamp is with or without opamp rolling insane good value for the money. It also highlight the importance of a good preamp/impedance matching in a hifi system. Highly recommended. The unit has replaced a Yaqin buffer with Psvane 6SN7 tubes. Other equipments in the setup are Asus router with LPS, Asus ROG miniITX/Ubuntu Studio/Paul Pang USB card with LPS. JCAT USB isolator. Bada power conditioner. Rca
cables are SKW OCC and Inakustik Excellence. USB cables are SKW OCC and Inakustik Excellence/Reference. Powe cables are Audioquest and Supra/rhodium connectors.
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This review has been posted for Preamplifier Volume Control OPA2604
Note :
 5/5
Date :
Excellent
À ce prix, difficile de trouver meilleur preampli en hi-fi
Envoi très bien emballé et reçu comme prévu.
Merci Audiophonic
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This review has been posted for Preamplifier Volume Control OPA2604
Note :
 5/5
Date :
The simplicity of being!
Well, 180 € is worth a game, alternatively you can still test something with a few OPA's that are out there, that was the background for my purchase decision. But what I have unpacked there was really stunning. Purely subjectively seen / heard plays completely in a different league than what you would expect here, very clear and detailed, huge foundation of structure, I know that sounds like hi-fi magazines but otherwise I can not describe it. It plays with a very high output voltage, on a UcD 180 brutal and on a KT 94 SE tube to kneel down, Incredible that it is here in a 180 € preamplifier, I know only from very high-priced equipment. Currently it runs with 1x V6 Vidid and 4x NJR Muse 8820 Dual J-FET for me a dream!

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This review has been posted for Preamplifier Volume Control OPA2604
 
Preamplifier Volume Control OPA2604
This preamplifier is both simple and efficient, and benefits from a robust and high-performance design that provides high-quality, transparent and...

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