Microphone Preamp Stage
AssemblyDual-channel low-noise preamps with 48V phantom power and adjustable input gain. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Microphone Preamp Stage parts and their functions
6 top-level parts · 6 parts in total · full bill of materials below
| # | Part | Qty | What it does |
|---|---|---|---|
| 1 | Preamp IC Channel 1 | 1× | OPA2134 or equivalent, ultra-low noise opamp channel 1 |
| 2 | Preamp IC Channel 2 | 1× | OPA2134 or equivalent, ultra-low noise opamp channel 2 |
| 3 | Phantom Power Supply | 1× | DC-DC converter generating 48V phantom power |
| 4 | Input Transformer Ch 1 | 1× | Audio transformer, channel 1 balanced to single-ended |
| 5 | Input Transformer Ch 2 | 1× | Audio transformer, channel 2 balanced to single-ended |
| 6 | SMD Passive (R/C/L) | 1× | Resistors, capacitors, and feedback networks |
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Bill of materials for Microphone Preamp Stage
6 top-level lines · 6 rows shown · 6 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Preamp IC Channel 1 | field-audio-recorder-preamp-ic-a | 1× | 1 | · | part |
| 2 | Preamp IC Channel 2 | field-audio-recorder-preamp-ic-b | 1× | 1 | · | part |
| 3 | Phantom Power Supply | field-audio-recorder-phantom-supply | 1× | 1 | · | part |
| 4 | Input Transformer Ch 1 | field-audio-recorder-input-transformer-a | 1× | 1 | · | part |
| 5 | Input Transformer Ch 2 | field-audio-recorder-input-transformer-b | 1× | 1 | · | part |
| 6 | SMD Passive (R/C/L) | smd-passives | 1× | 1 | · | part |
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Where the microphone preamp stage is used
1 product across 1 domain contain it, directly or inside a sub-assemblyUsed in 1 assembly
Sourcing: possible vendors
Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
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🇨🇳Foxconn
foxconn.com ↗
|
Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |