Phono preamplifier


For fans of the highest quality sound from an analog record, we have prepared a new phono preamplifier – Flō.
The name is the phonetic notation of the English word “flow”.
And that’s what Flō is – natural – music flows through him.

Robert Rolof (Rolof Audio) one of Poland's most experienced audio designers, with whom Closer Acoustics works closely on all electronics, is responsible for the design and sound of the Flō, so this phono preamp hides many years of experience in analog sound.

Phonostage for all Cartridges?


The Flō input is equipped with two sets of XLR and RCA sockets. The preamplifier uses a proprietary solution that allows you to connect a symmetrical signal from the cartridge even using RCA cables.
For optimal matching of the phono cartridge connected to the preamplifier, the impedance, capacitance and gain of the input stage are adjustable.
The switches are located on the front plate, so you can select the optimal operating parameters easily according to the requirements of the cartridge.

The preamplifier has five frequency response correction circuits. Equalization is carried out passively in two independent stages, separately for low and high frequencies. In the case of the RIAA characteristic, an additional filter was used to correct the operation of the circuit in the 50kHz range. The signal path uses current coupling with the omission of interstage capacitors.
Two turntables can be connected at the same time.

Phono preamplifier

Power supply

Symmetrical power supply equipped with ultra-fast rectifying diodes, polyester capacitors suppressing high-frequency impulse interference, main filtration based on Panasonic low-impedance electrolytes with an extended lifetime of up to 10,000 h and a total capacity of over 50,000 microfarads. Two-stage power supply stabilization with a circuit reducing voltage ripple by an additional 15dB. At the output of the power supply, an additional filter made of polypropylene capacitors improves its impedance characteristics and gives it a more analog texture.

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