Cartridge Input Buffer

Assembly

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Low-capacitance, high-impedance input accepting moving-magnet or moving-coil cartridge signals (5–10 mV) with selectable load impedance matching.

Direct parts	6
Total parts	7
Used in	1 assembly
Class	Assembly

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Low-capacitance, high-impedance input accepting moving-magnet or moving-coil cartridge signals (5–10 mV) with selectable load impedance matching. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Cartridge Input Buffer parts and their functions

6 top-level parts · 7 parts in total · full bill of materials below

Cartridge Input Buffer parts diagram: 1 cartridge type switch, 2 load resistor network, 3 load capacitance network, 4 input buffer op-amp, 5 connector, 6 SMD passive (R/C/L). 7 parts in 6 top-level items. — Cartridge Input Buffer parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Cartridge Type Switch	1×	Switch selecting moving-magnet (47 kΩ) or moving-coil (100 Ω) loading
2	Load Resistor Network	1×	Precision resistor network (47 kΩ + parallel values for load tuning)
3	Load Capacitance Network	1×	Film capacitor in parallel with load (typically 100–500 pF), adjustable
4	Input Buffer Op-Amp	1×	Ultra-low noise op-amp (−125 dBV/√Hz) with FET input
5	Connector	2×	RCA female jacks for left and right cartridge inputs
6	SMD Passive (R/C/L)	1×	Bypass capacitors, input coupling networks

3D model

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Bill of materials for Cartridge Input Buffer

6 top-level lines · 6 rows shown · 7 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Cartridge Type Switch	phono-preamp-input-selector	1×	1	·	part
2	Load Resistor Network	phono-preamp-load-resistor	1×	1	·	part
3	Load Capacitance Network	phono-preamp-load-capacitor	1×	1	·	part
4	Input Buffer Op-Amp	phono-preamp-input-buffer-opamp	1×	1	·	part
5	Connector	connector	2×	2	·	part
6	SMD Passive (R/C/L)	smd-passives	1×	1	·	part

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Where the cartridge input buffer is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Audio & Video 1 Phono Preamplifier

Used in 1 assembly

Phono Preamplifier

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
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks