CROS/BICROS Pure C&G AX Transmitter Review (2026): Price in India, Features, Pros & Cons

The CROS/BICROS Pure C&G AX Transmitter shares its physical housing with the Pure C&G AX receiver hearing aid, which is a deliberate design decision by Signia to ensure the two units worn on opposite ears look virtually identical. This matters considerably to users who are conscious of wearing what might otherwise appear to be an obviously mismatched pair of devices. The RIC form factor means a slim body sits behind the pinna, with a thin receiver tube running into the ear canal on the non-hearing side — though on the transmitter ear, no receiver is actually present in the canal, so a cosmetic placeholder or open dome is used instead.

The housing is compact and lightweight, consistent with what Signia offers across the Pure C&G family. The behind-the-ear section is ergonomically curved to follow the natural contour of the ear, and the unit slots into the same inductive charging case as the receiver aid. For day-to-day wear, most users find the transmitter no more intrusive than a standard RIC aid. The approximate IP68 water and dust resistance rating means everyday moisture exposure — perspiration during an afternoon walk or brief rain — is handled without concern. HearClear audiologists will carry out a full ear examination and comfort fitting check during your initial appointment at any of the 40+ clinics before finalising your order.

It is important to understand what the AX Transmitter does and does not do in terms of sound processing. The transmitter's role is to capture acoustic input from the deaf or unaidable side using its onboard microphones and relay that audio wirelessly to the Signia Pure C&G AX receiver aid on the better ear. All meaningful signal processing — noise reduction, directional microphone steering, speech enhancement — occurs within the receiver aid's AX (Augmented Xperience) dual-processor chip, not within the transmitter itself.

The AX platform, which Signia introduced to separate foreground speech from background sound using two independent processors, does bring genuine benefits to the BICROS user: the better ear's aid can simultaneously process its own direct acoustic input alongside the CROS signal, blending them intelligently. This means a user in a noisy restaurant can receive speech from their deaf side without that signal overwhelming the natural hearing on their better ear. The wireless CROS link between transmitter and receiver operates with sufficiently low latency to avoid a perceptible echo effect during face-to-face conversation, which has historically been one of the practical challenges in CROS system design. Audiologists at HearClear use Signia's clinical fitting software (Connexx) to calibrate the CROS gain and microphone directionality to each patient's specific audiogram and lifestyle profile.

The CROS/BICROS Pure C&G AX Transmitter itself does not stream audio from phones, televisions, or other Bluetooth sources — that function belongs entirely to the receiver aid. What the transmitter does do is maintain a constant, proprietary wireless connection to the paired Pure C&G AX receiver, synchronising volume and programme changes so the system behaves as a unified pair. When the receiver aid's wearer adjusts the volume or switches listening programmes via the Signia app or a physical button, the transmitter responds in tandem.

The Signia app (available for Android and iOS) gives system-level access to volume control, programme selection, and basic sound adjustments. More granular tuning — such as the balance between the CROS microphone input and the direct acoustic input on the better ear — is configured by the audiologist during fitting sessions rather than by the user in the app. This is the appropriate approach for a clinical CROS system, where incorrect self-adjustment of the CROS ratio can undermine speech intelligibility rather than improve it. The transmitter does not support telecoil, direct Bluetooth audio, or hands-free calling; all of those capabilities depend on the companion receiver aid model selected. Users should clarify streaming requirements with their HearClear audiologist to ensure the receiver aid they select supports the connectivity features they need.

The Pure C&G AX Transmitter uses a rechargeable lithium-ion cell, eliminating the need to stock or replace disposable hearing aid batteries on the transmitter side. Approximate real-world battery life is around 24 hours per full charge under typical CROS usage — meaning the transmitter, when placed in its charging case overnight for roughly three to four hours, is ready for a full waking day of use. This aligns with the battery performance of the companion Pure C&G AX receiver aid, so both units can be charged simultaneously in the same case without one outpacing the other.

The charging case design mirrors what Signia uses across the Pure C&G rechargeable family: a compact, portable case with its own internal battery that can provide multiple recharges on the go without needing a wall socket. This is a practical advantage for users who travel frequently or who work long days and cannot guarantee access to a power point mid-day. One practical note: the transmitter and receiver share the same physical case design but are paired units — placing the transmitter in a different brand's charger is not advised. Should charging contacts or the case itself require service, HearClear's aftercare team at any clinic can assist under the 3-year warranty that covers this product.

The Signia CROS/BICROS Pure C&G AX Transmitter is priced at ₹35,990 at HearClear India. It is essential to understand that this is the transmitter unit cost alone. A complete, functional CROS or BICROS system additionally requires a Signia Pure C&G AX receiver hearing aid, which is purchased separately. The total investment for a working CROS system will therefore be the combined cost of both the transmitter and the receiver aid. For a BICROS fitting — where the better ear also has hearing loss that benefits from amplification — a higher-specification receiver aid may be recommended, which will influence the overall system price.

HearClear offers EMI options through leading banks and financial partners, allowing the combined system cost to be spread across affordable monthly instalments — speak to the front desk at your nearest clinic for current EMI tenure and rate options. The transmitter purchase includes the device itself, the charging case, a standard receiver tube set for the transmitter ear, and initial fitting documentation. All purchases at HearClear carry a 3-year warranty and a 3-day risk-free trial, giving you the opportunity to evaluate the CROS system in your own daily environments before fully committing. A free hearing test is available at any of HearClear's 40+ clinics across India to confirm whether a CROS or BICROS configuration is appropriate for your hearing profile.

The CROS/BICROS Pure C&G AX Transmitter is an appropriate choice for adults diagnosed with single-sided deafness — where one ear has no measurable or functional hearing — who want to restore awareness of sounds approaching from their non-hearing side without pursuing surgical options such as bone-anchored hearing systems. It is equally suited to BICROS fittings, where the better ear has mild-to-moderate hearing loss that benefits from amplification in addition to receiving the CROS signal. Users who are already invested in the Signia AX platform ecosystem — for example, those who have trialled or own a Pure C&G AX receiver — will find this transmitter the logical and fully compatible companion unit.

Those who should not buy this transmitter in isolation are users who have not yet selected or purchased a compatible Signia Pure C&G AX receiver aid, since the transmitter alone produces no audible output for the wearer. Additionally, users whose better ear requires a more powerful BTE or SP-style fitting (rather than a RIC receiver) should discuss with their HearClear audiologist whether the CROS Pure C&G AX system is the right form factor, or whether a different CROS family is more appropriate. Users who are considering the newer Signia IX platform should review the CROS Pure C&G IX Transmitter option, as AX-platform transmitters are not cross-compatible with IX-platform receiver aids. An audiologist-led assessment is strongly recommended before purchase.

CROS and BICROS fittings are among the more technically involved hearing aid fitting procedures, requiring careful audiometric assessment of both ears, selection of the appropriate receiver aid and CROS transmitter pairing, and precise software-based calibration of the CROS gain, microphone directionality, and programme structure. HearClear's audiologists are experienced in Signia's Connexx fitting platform and follow established CROS verification protocols — including real-ear measurement where appropriate — to ensure the transmitter signal is appropriately balanced with the receiver's own amplification.

Every Signia CROS/BICROS Pure C&G AX Transmitter purchased through HearClear India comes with a 3-year warranty covering manufacturing defects, along with access to HearClear's aftercare network across 40+ clinics nationally for routine cleaning, re-tubing, firmware updates, and any required programming adjustments over the warranty period. A 3-day risk-free trial is offered so that the system can be evaluated in real-world listening environments — at home, at work, or in social settings — before the purchase is finalised. For users in cities where HearClear has multiple branches, follow-up appointments for fine-tuning can be booked at any convenient location, not necessarily the original fitting clinic. Contact your nearest HearClear clinic to schedule your free hearing test and CROS candidacy assessment as the starting point.