Both Astera² systems and GSI 61 verify
$2,500
The ROI constraint binds at about $2,526.92 before rounding.
Analysis snapshotSnapshot decision:REVIEW
2× MADSEN Astera² + GSI 61 Audiology Equipment — GSA Auction Analysis
Seller-described two MADSEN Astera² systems plus a GSI 61 are a substantial accessory-rich audiology lot, but the overview photo does not prove complete PC-based Astera² systems, matched calibrated transducers, or function. $150 is above the $0 blind ceiling; $2,500 is conditional on complete verified systems.
Stale-data warning
Analysis snapshot · Open at observation — observed October 8, 2026. This is an immutable observation, not a live feed. The auction is scheduled to close October 13, 2026. Price, status, close time, and terms may have changed. Check the source auction before bidding.
Decision at a glance
RecommendationREVIEW
Verification required before bidding
REVIEW retains a decision-material input that must be resolved before treating any bid as responsible.
- Blind/as-is model ceiling
- $0
REVIEW means material verification is still required before bidding responsibly. This is the current snapshot blind/as-is model ceiling, not a verification-dependent scenario ceiling.
Why this decision
REVIEW: $150 exceeds the $0 blind ceiling. Approximately $2,500 applies only after both Astera² systems verify as complete clinical systems with PC/Otosuite and usable calibrated transducers, plus a functional GSI 61.
What to verify before bidding
- ACP/control hardware must not be valued as complete Astera² clinical systems.
Conditional scenario ceilings
These are verification-dependent scenarios, not current bid limits.
Only one Astera² proves complete
$400
The second system is treated as ACP/control-panel value.
Not a current bid limit. Use only if the stated scenario conditions are satisfied.
Review full sensitivity scenariosSee costs and maximum bid for the displayed assumptions and buyer-premium treatment.
- Snapshot observed bid
- $150
- Bidders
- Not captured
- Resale model
- $3,000–$7,000
Modeled resale range · conservative max-bid input $3,000
Snapshot provenance and timing · observed Oct 8, 2026, 6:17 AM UTC · scheduled close October 13, 2026
GSA Auctions sale 1-1-QSC-I-27-020, lot 030 · Lexington, Kentucky 40502
Snapshot observed Oct 8, 2026, 6:17 AM UTC
Scheduled close October 13, 2026
Analysis prepared Oct 8, 2026, 6:17 AM UTC
Published October 8, 2026 · page updated October 8, 2026
Prepared and published by Oleksii Udod for LotCaliper.
Currently open related analyses
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These are individually prepared, time-stamped analyses with recorded scheduled closes. Verify the official auction before acting.
Auction snapshot
This page preserves the October 8, 2026 GSA open-auction observation for item 379192, sale 1-1-QSC-I-27-020, lot 030: a $150 current bid and no established bidder count.
Clinical audiometry should be underwritten as calibrated systems, not visible consoles plus loose headsets.
Review and correction history
Independent review completed. No corrections recorded.
View review and correction details
Independent review completed
Status: Approved · Reviewed October 8, 2026
Source-first review approved the conditional whole-lot underwriting while retaining all unit-level configuration and function uncertainty.
How independent review worksHow evidence is classified
Seller facts, photo-derived observations, manufacturer context, unknowns, and LotCaliper assumptions remain explicitly separated.
Source Confirmed
Seller-confirmed
- Seller identifies two Astera² units and one GSI 61; the overview image corroborates a substantial audiology bundle.
Photo Derived
Photo-derived
- At least two console/control assemblies and multiple accessory-like items are visible; no individual plate or functional state is proven.
Not Established
Not established
- Astera² main hardware, PC/Otosuite, matched transducers, calibration, channel function, and GSI 61 configuration/function.
Manufacturer Context
Independent context
- Natus supports Astera²/Otosuite; GSI Suite retains legacy GSI 61 support. Neither fact proves the auction systems work.
Lotcaliper Assumption
LotCaliper assumptions
- $3,000 blind resale and $0 hammer; $7,000 and $2,500 only after full verification.
Equipment identity
Calibration · quantity 2
GN Otometrics / MADSEN Two seller-identified Astera² audiometers; individual plates not photo-resolved
Identity confidence: Medium High
Identity evidence
Seller identifies two Astera² systems; overview photo corroborates an Otometrics/MADSEN bundle but not unit-by-unit plates.
GSA Auctions · Source Field · observed Oct 8, 2026, 6:17 AM UTC
Overview photo shows a substantial bundle and at least two similar console/control assemblies.
GSA Auctions · Image · observed Oct 8, 2026, 6:17 AM UTC
Calibration · quantity 1
Grason-Stadler Seller-identified GSI 61 audiometer control panel
Identity confidence: Medium
Identity evidence
Seller identifies one GSI 61; overview photo does not resolve a readable individual plate.
GSA Auctions · Source Field · observed Oct 8, 2026, 6:17 AM UTC
Configuration
At least two console/control assemblies, transducer/headset-like hardware, cables, adapters, and power hardware
Confirmed · Medium confidence
Configuration evidence
Overview photo shows a substantial bundle and at least two similar console/control assemblies.
GSA Auctions · Image · observed Oct 8, 2026, 6:17 AM UTC
Astera² main hardware, PCs, Otosuite state, matched transducers, speakers, patient responses, calibration, and function
Not established · no source evidence establishes presence or absence
Configuration evidence
Overview photo does not establish complete PC-based systems or per-unit accessory assignment.
GSA Auctions · Image · observed Oct 8, 2026, 6:17 AM UTC
GSI 61 pictured chassis, transducers, accessories, calibration, and function
Not established · no source evidence establishes presence or absence
Configuration evidence
Seller identity is retained but the overview photo cannot isolate the exact GSI 61 configuration.
GSA Auctions · Image · observed Oct 8, 2026, 6:17 AM UTC
Condition
As-is / repair risk
Seller says parts may be missing, repairs may be required, and all equipment was considered repairable upon turn-in; no power, calibration, PC, tone, speech, channel, or transducer test is shown.
Evidence confidence: High
Condition evidence
Seller condition wording and overview photo.
GSA Auctions · Text · observed Oct 8, 2026, 6:17 AM UTC
Market evidence
Market evidence strength
Medium Low
Public auditability
Full
Evidence recency
Current
Modeled resale range
$3,000–$7,000
Conservative input used for max-bid math: $3,000
Market support: Medium Low
Limited market support — these are modeled assumptions, not a measured market value. Inspect the comparable evidence before relying on the range.
Complete-system asks, control-panel asks, dealer asks, and auction acquisitions demonstrate extreme configuration and condition dispersion rather than a whole-lot market median.
| Model match | Evidence type | Treatment | Count |
|---|---|---|---|
| Exact Model | Asking | Context Only | 1 |
| Exact Model | Realized Auction Acquisition | Context Only | 1 |
| Source | Evidence | Observed | Price | Relevance and treatment |
|---|---|---|---|---|
| eBay MADSEN Astera² item 406452522403 Marketplace | Asking Exact Model | October 8, 2026 | $9,000 | Recently calibrated single Astera² ask; not realized resale. Context Only |
| BidProwl archived PublicSurplus GSI 61 Auction | Realized Auction Acquisition Exact Model | October 8, 2026 | $137.50 | Public-auction acquisition, not reseller resale. Context Only |
Sensitivity and robustness
Requires Verification
The scenarios show potentially workable economics, but the stated verification gate must be resolved before bidding responsibly.
Both Astera² systems and GSI 61 verify
- Max hammer
- $2,500
- Gross resale model
- $7,000
The ROI constraint binds at about $2,526.92 before rounding.
Only one Astera² proves complete
- Max hammer
- $400
- Gross resale model
- $4,000
The second system is treated as ACP/control-panel value.
Costs and maximum bid
| Transaction / operating cost | Amount | Basis |
|---|---|---|
| Selling Fees | $450 | LotCaliper assumption: 15% of modeled gross resale. |
| Shipping | $600 | LotCaliper pickup, packing, rigging, and inbound-logistics reserve; not a carrier or GSA quote. |
| Testing Repair Reserve | $1,500 | LotCaliper functional-test and diagnostic reserve. |
| Risk Buffer | $800 | LotCaliper reserve for repair-risk condition, unresolved configuration, functional verification, and specialist resale liquidity. |
| Other | $1,000 | LotCaliper missing-component, configuration, or recovery reserve; not a seller or service quote. |
- Buyer premium
- Not modeled
- Return requirements
- $500 minimum profit · 30% minimum ROI
- Computed bid constraints
Profit floor: $0
ROI floor: $0
Binding: Profit and ROI floors
- Snapshot blind/as-is max hammer
- $0
- Modeled result at recorded bid
- -$1,500 profit · -37.04% modeled ROI
This is a reseller ceiling, not a prediction of the auction's closing price. Any buyer premium or other unquoted acquisition charge must be deducted before bidding.
Audiometry-system completeness before valuation
Complete calibrated systems and bare control hardware have radically different values. The photo does not establish that both Astera² units are complete PC-based measurement chains.
The conditional model requires two complete Astera² systems and a functioning GSI 61; it cannot be used from visible control panels alone.
- Locate main hardware plates, PCs, Otosuite access, and matched transducers for each Astera².
- Test channels, speech/tone paths, calibration state, and GSI 61 separately.
Recommendation and rationale
Snapshot decision
REVIEWREVIEW: $150 exceeds the $0 blind ceiling. Approximately $2,500 applies only after both Astera² systems verify as complete clinical systems with PC/Otosuite and usable calibrated transducers, plus a functional GSI 61.
Confidence
- Identity
- Medium High
- Configuration
- Low
- Condition
- Low
- Market Support
- Medium Low
- Costs
- Medium Low
Why these confidence levels were assigned
- Identity rationale
- Seller identities are corroborated only broadly by the overview photo.
- Material unknowns: Bounded
- Configuration rationale
- Complete PC, transducer, and calibration chains are unestablished.
- Material unknowns: Unbounded
- Condition rationale
- Repair-risk wording controls without functional proof.
- Material unknowns: Unbounded
- Market Support rationale
- Condition and configuration drive wide price dispersion.
- Material unknowns: Unbounded
- Costs rationale
- Buyer-managed packing and calibration/service needs are unquoted.
- Material unknowns: Bounded
Market support assesses how well the available evidence supports the resale assumption. Exact third-party marketplace records may be omitted when source-use rights are unclear. Each dimension uses the published methodology rubric; a confidence label measures the strength and boundedness of its evidence, not the likelihood of a profitable outcome.
Risks and unknowns
High · Missing Components
ACP/control hardware must not be valued as complete Astera² clinical systems.
PC, Otosuite, transducer assignment, calibration, and function are unestablished.
Sources
View cited public sources
- GSA Auctions item 379192
Official immutable auction-observation provenance.
- Natus MADSEN Astera²
Official current platform context.
- Grason-Stadler GSI Suite
Official legacy GSI 61 support context.