
BRZHIFI F2 HiFi Stereo Preamplifier with Bass Treble Tone Control Rare Gold Sealed Op-Amp
Key Features
- High and low frequency adjustment + direct mode
- Compatible with multiple devices, with strong scalability
- Exclusive scarcity
- Classic craftsmanship
- Smooth damping precise control
- 3-in-2-out audio interface
Cash / Online Payment · EMI Available
Description
BRZHIFI F2 HiFi Stereo Preamplifier with Bass Treble Tone Control Rare Gold Sealed Op-Amp Audio Pre-Amp
The BRZHIFI F2 HiFi Stereo Preamplifier is a compact, high-fidelity transistor heating preamplifier designed to shape and optimize audio signals before they reach your main power amplifier. It is manufactured by the specialized audio brand
Key Technical Specifications
- Device Type: Transistor heating preamplifier with private mold styling.
- Audio Channels: 2.0 Stereo channel output.
- Tone Correction: Dedicated independent Bass and Treble adjustment knobs for customized frequency tuning.
- Audio Processing: Features localized tone manipulation hardware matching discrete equalization standards
Key Functionality & Design Features
- Signal Optimization: It acts as a processing middleman between standard line-level source devices (like DACs, CD players, or phones) and your power amplifiers to enrich tone depth.
- Equalization Flexibility: Integrates physical continuous-turn dials for smooth equalization tweaks without digital latency. [1]
- Chassis Construction: Follows the signature BRZHIFI standard of using machined aluminum alloy enclosures to keep background noise minimal and shield inner circuitry.
Design original intention
Let the breathing of the 1980s simulate the golden age continue in your listening space. We have a collection of LM741 gold sealed operational amplifiers from the 1980s and 1990s in our hands. Thanks to the process containing lead and mercury, lead has better electrical performance and mercury has better heat dissipation performance. In today’s world dominated by environmentally friendly plastic packaging, the transparent and delicate sound quality created by this almost extinct process has been fully verified on the T4 front-end. Based on the essence of the same origin Quintessence Group1 line, we have eliminated niche singing and playback inputs and added more daily high and low frequency adjustment and straight through functions. Not for the sake of high and low scores, just to make this retro gold seal craftsmanship and practical tuning a fever level that every music lover can reach.
Main operational amplifier
LM741 gold sealed operational amplifier ×2
Craftsmanship from the 1980s and 1990s, with no substitute on the market
Tonal operational amplifier
NE5534P Accurate adjustment of high and low frequencies with minimal distortion
Power supply materials
7W Transformer + 5600UF filtering capacitor
Stable power supply, reduced noise, and solidified sound quality foundation
Signal switching
Nondestructive switching of relays
No popping sound, smooth switching
Core functionality
High and low frequency adjustment + direct mode
If you want to adjust the style, adjust it
If you want to hear the original sound cut it off
Output interface
Stereo Out
Compatible with multiple devices, with strong scalability
Exclusive scarcity
The stock of dismantled products from the 1980s and 1990s cannot be replicated under modern environmental regulations. The LM741 gold sealed version is rare in the market, and there is no similar product among competitors.
Collectible value
Old craft chips are remnants of audio history, using one chip less than another, combining practicality and collectible properties.
Classic craftsmanship
Gallbladder Music Experience
Optimizing the conductivity and thermal stability of the chip with lead mercury composition, it has the characteristic of warm sound with a bile flavor, balancing high resolution and durability, and is not tiring to listen to for a long time.
Front panel labels:
* POWER
* SELECT (1, 2, 3)
* TRE/TONE
* BASS
* VOLUME
* Min
* Max
Aluminum alloy knob
Smooth damping precise control
Selected high-quality aluminum alloy, CNC precision machining + delicate surface treatment, warm and non slip touch, strong metallic texture, durable and long-lasting.
Rear panel labels:
* OUTPUT
* A/B
* L/R
* INPUT
* 1
* 2
* 3
RCA Lotus Terminal
3-in-2-out audio interface
Configure three sets of inputs and two sets of outputs.
Flexible switching of multiple audio sources.















