Procurement
Holds quantity, currency, destination and the optional target budget. Asks whether the supplier preference is high-end, mid-range, budget or undecided. That preference is not a grade this desk has audited.
Four roles, one analog brief
Engineering
Writes mic-pre count, aux sends, subgroup count, phantom-power current and insert points. States input voltage at the rack in volts, hertz and phase. Flags a coverage angle when loudspeakers travel in the same package.
Operations
Describes the duty pattern: weekly service hours, outdoor spill, or a fixed install. Notes ambient temperature, fan noise level if a powered rack is nearby, and the working envelope of the table plus cable trough.
Quality
Defines the incoming check and any factory acceptance test the buyer will pay to witness. Keeps a specification deviation log when a substitute EQ or a missing meter is offered.
The handoff is a single brief. Procurement does not close a purchase while engineering still lists phantom power as unknown. Quality does not accept a headline preamp figure that lacks a test basis.
Rooms that change the analog question list
Live music asks about aux-fed monitors and a rugged chassis. A house of worship often adds a hearing-assist output and a locked gain structure for volunteer operators. Education rooms care about a simple input path and a noise level that stays low during speech. Hospitality and corporate AV may pair the analog audio mixer with a small zone split; installed paging may need priority muting that must be confirmed on the exact model rather than assumed from the category name.
Rigging or mounting is a clamp, a rack kit or a table. Environmental rating, including any ingress protection code, is a supplier document. Most analog desks are indoor products. Say so when the patio or a pool deck is the real duty.
Same-basis commercial questions
Why split equipment price from delivered cost?
The chassis number hides the snake, the case and the startup visit. List those layers even when the amounts are still blank. Blank is an open item. It is not a zero.
Standard frame or a rebuilt panel?
A standard analog audio mixer can be easier to document. An application-specific panel, extra subgroups or a custom fader taper may be required by the room. Mark which path is mandatory. Do not treat a custom metal shop as included unless the quote says it is.
How should frequency response be read?
Ask for hertz limits and the decibel tolerance, plus the level used for the test. Two curves with different tolerances are not one ranking.
What does continuous power mean on an analog desk?
Often nothing, because the desk is line level. If the quote bundles an amplifier, require watts, ohms and duty cycle at a named ambient temperature. Otherwise write not applicable.
Which exclusions break a comparison?
Freight, commissioning scope, consumables, a spare parts list and training. Also the control interface if a digital sidecar is offered as an option beside the analog frame. Keep that sidecar on its own line. See USB scope and product cards.
Hold the comparison until the scope matches
After factories reply, line up configuration, quantity, currency, packaging, Incoterm, freight, commissioning, spares and exclusions. Timing is a supplier statement to verify, not a date this page can lock. Record analog numbers in the supplier column: mic pre gain such as 60 dB, phantom power at 48 V, fader count, aux count, and a frequency response such as 20 Hz to 20 kHz within ±1 dB. Rated power stays blank unless an amplifier is attached, in which case ask for watts into 4 ohms or 8 ohms. Input voltage might be 120 V at 60 Hz in a US room. Working envelope might be a 483 mm wide rack ear kit or a table width in millimeters. Ambient temperature and a noise-level target, for example under 30 dBA at 1 m in a speech room, are buyer limits rather than mixer achievements. The console checklist covers card-frame surfaces when the project outgrows a fixed analog layout. The brief keeps the evidence columns in one place.
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